13853931 has 32 divisors (see below), whose sum is σ = 23482368. Its totient is φ = 7067520.

The previous prime is 13853927. The next prime is 13853951. The reversal of 13853931 is 13935831.

It is not a de Polignac number, because 13853931 - 2² = 13853927 is a prime.

It is a super-2 number, since 2×13853931² = 383862808305522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13853892 and 13853901.

It is not an unprimeable number, because it can be changed into a prime (13853951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7645 + ... + 9281.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^13853931 is an apocalyptic number.

13853931 is a deficient number, since it is larger than the sum of its proper divisors (9628437).

13853931 is a wasteful number, since it uses less digits than its factorization.

13853931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its digits is 9720, while the sum is 33.

The square root of 13853931 is about 3722.0869146220. The cubic root of 13853931 is about 240.1730869460.

The spelling of 13853931 in words is "thirteen million, eight hundred fifty-three thousand, nine hundred thirty-one".