Search a number
-
+
131055045 = 35112273499
BaseRepresentation
bin1111100111110…
…11110111000101
3100010121021201120
413303323313011
5232022230140
621000544153
73150643452
oct763736705
9303537646
10131055045
1167a82660
1237a82059
13211c7a84
1413596829
15b78b1d0
hex7cfbdc5

131055045 has 32 divisors (see below), whose sum is σ = 229824000. Its totient is φ = 63243840.

The previous prime is 131055017. The next prime is 131055047. The reversal of 131055045 is 540550131.

It is not a de Polignac number, because 131055045 - 212 = 131050949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131055047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35706 + ... + 39204.

It is an arithmetic number, because the mean of its divisors is an integer number (7182000).

Almost surely, 2131055045 is an apocalyptic number.

131055045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131055045 is a deficient number, since it is larger than the sum of its proper divisors (98768955).

131055045 is a wasteful number, since it uses less digits than its factorization.

131055045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 131055045 is about 11447.9275416994. The cubic root of 131055045 is about 507.9464327029.

The spelling of 131055045 in words is "one hundred thirty-one million, fifty-five thousand, forty-five".

Divisors: 1 3 5 11 15 33 55 165 227 681 1135 2497 3405 3499 7491 10497 12485 17495 37455 38489 52485 115467 192445 577335 794273 2382819 3971365 8737003 11914095 26211009 43685015 131055045