Search a number
-
+
131859013 = 11131635657
BaseRepresentation
bin1111101110000…
…00001001000101
3100012010010120011
413313000021011
5232223442023
621030110221
73160532416
oct767001105
9305103504
10131859013
11684816a0
12381ab371
13214199b0
141372580d
15b89950d
hex7dc0245

131859013 has 16 divisors (see below), whose sum is σ = 155889216. Its totient is φ = 109952640.

The previous prime is 131858983. The next prime is 131859037. The reversal of 131859013 is 310958131.

It is a cyclic number.

It is not a de Polignac number, because 131859013 - 217 = 131727941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131859073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20481 + ... + 26137.

It is an arithmetic number, because the mean of its divisors is an integer number (9743076).

Almost surely, 2131859013 is an apocalyptic number.

131859013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131859013 is a deficient number, since it is larger than the sum of its proper divisors (24030203).

131859013 is a wasteful number, since it uses less digits than its factorization.

131859013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 131859013 is about 11482.9879822283. The cubic root of 131859013 is about 508.9829957407.

The spelling of 131859013 in words is "one hundred thirty-one million, eight hundred fifty-nine thousand, thirteen".

Divisors: 1 11 13 143 163 1793 2119 5657 23309 62227 73541 808951 922091 10143001 11987183 131859013