Search a number
-
+
131057190 = 2355114903
BaseRepresentation
bin1111100111111…
…00011000100110
3100010121101200000
413303330120212
5232022312230
621001002130
73150652635
oct763743046
9303541600
10131057190
1167a84230
1237a83346
13211c8a44
141359751c
15b78bb60
hex7cfc626

131057190 has 96 divisors (see below), whose sum is σ = 385572096. Its totient is φ = 31764960.

The previous prime is 131057189. The next prime is 131057207. The reversal of 131057190 is 91750131.

It is a happy number.

131057190 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 571 + 90 = 666.

It is a super-2 number, since 2×1310571902 = 34351974101392200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24279 + ... + 29181.

It is an arithmetic number, because the mean of its divisors is an integer number (4016376).

Almost surely, 2131057190 is an apocalyptic number.

131057190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131057190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192786048).

131057190 is an abundant number, since it is smaller than the sum of its proper divisors (254514906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131057190 is a wasteful number, since it uses less digits than its factorization.

131057190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 131057190 is about 11448.0212263954. The cubic root of 131057190 is about 507.9492039027.

The spelling of 131057190 in words is "one hundred thirty-one million, fifty-seven thousand, one hundred ninety".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 81 90 99 110 135 162 165 198 243 270 297 330 405 486 495 594 810 891 990 1215 1485 1782 2430 2673 2970 4455 4903 5346 8910 9806 13365 14709 24515 26730 29418 44127 49030 53933 73545 88254 107866 132381 147090 161799 220635 264762 269665 323598 397143 441270 485397 539330 661905 794286 808995 970794 1191429 1323810 1456191 1617990 1985715 2382858 2426985 2912382 3971430 4368573 4853970 5957145 7280955 8737146 11914290 13105719 14561910 21842865 26211438 43685730 65528595 131057190