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131201510 = 25112293739
BaseRepresentation
bin1111101000111…
…11100111100110
3100010212201122012
413310133213212
5232041422020
621004034222
73152123456
oct764374746
9303781565
10131201510
1168072700
1237b32972
132124963b
14135d3d66
15b7b97c5
hex7d1f9e6

131201510 has 48 divisors (see below), whose sum is σ = 268606800. Its totient is φ = 46052160.

The previous prime is 131201509. The next prime is 131201533. The reversal of 131201510 is 15102131.

131201510 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33221 + ... + 36959.

It is an arithmetic number, because the mean of its divisors is an integer number (5595975).

Almost surely, 2131201510 is an apocalyptic number.

131201510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131201510 is an abundant number, since it is smaller than the sum of its proper divisors (137405290).

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

131201510 is a wasteful number, since it uses less digits than its factorization.

131201510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797 (or 3786 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 131201510 is about 11454.3227647906. The cubic root of 131201510 is about 508.1355864963.

Adding to 131201510 its reverse (15102131), we get a palindrome (146303641).

The spelling of 131201510 in words is "one hundred thirty-one million, two hundred one thousand, five hundred ten".

Divisors: 1 2 5 10 11 22 29 55 58 110 121 145 242 290 319 605 638 1210 1595 3190 3509 3739 7018 7478 17545 18695 35090 37390 41129 82258 108431 205645 216862 411290 452419 542155 904838 1084310 1192741 2262095 2385482 4524190 5963705 11927410 13120151 26240302 65600755 131201510