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13955031 = 333761229
BaseRepresentation
bin110101001110…
…111111010111
3222020222201000
4311032333113
512033030111
61215034343
7226421136
oct65167727
928228630
1013955031
117971692
12480b9b3
132b77b1c
141bd391d
151359c56
hexd4efd7

13955031 has 32 divisors (see below), whose sum is σ = 21675200. Its totient is φ = 8864640.

The previous prime is 13955027. The next prime is 13955057. The reversal of 13955031 is 13055931.

It is not a de Polignac number, because 13955031 - 22 = 13955027 is a prime.

It is a super-2 number, since 2×139550312 = 389485780421922, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13954986 and 13955004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13955131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60825 + ... + 61053.

It is an arithmetic number, because the mean of its divisors is an integer number (677350).

Almost surely, 213955031 is an apocalyptic number.

13955031 is a deficient number, since it is larger than the sum of its proper divisors (7720169).

13955031 is a wasteful number, since it uses less digits than its factorization.

13955031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 13955031 is about 3735.6433180913. The cubic root of 13955031 is about 240.7558979931.

The spelling of 13955031 in words is "thirteen million, nine hundred fifty-five thousand, thirty-one".

Divisors: 1 3 9 27 37 61 111 183 229 333 549 687 999 1647 2061 2257 6183 6771 8473 13969 20313 25419 41907 60939 76257 125721 228771 377163 516853 1550559 4651677 13955031