13161031 has 8 divisors (see below), whose sum is σ = 14312480. Its totient is φ = 12029472.

The previous prime is 13161023. The next prime is 13161047. The reversal of 13161031 is 13016131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13161031 - 2³ = 13161023 is a prime.

It is a super-2 number, since 2×13161031² = 346425473965922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13160996 and 13161014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3576 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (1789060).

Almost surely, 2^13161031 is an apocalyptic number.

13161031 is a deficient number, since it is larger than the sum of its proper divisors (1151449).

13161031 is a wasteful number, since it uses less digits than its factorization.

13161031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 13161031 is about 3627.8135288352. The cubic root of 13161031 is about 236.1003535194.

Subtracting from 13161031 its sum of digits (16), we obtain a triangular number (13161015 = T₅₁₃₀).

Adding to 13161031 its reverse (13016131), we get a palindrome (26177162).

The spelling of 13161031 in words is "thirteen million, one hundred sixty-one thousand, thirty-one".