13957431 has 8 divisors (see below), whose sum is σ = 18633984. Its totient is φ = 9292920.

The previous prime is 13957429. The next prime is 13957451. The reversal of 13957431 is 13475931.

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

It is not a de Polignac number, because 13957431 - 2¹ = 13957429 is a prime.

It is a super-2 number, since 2×13957431² = 389619760239522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13957392 and 13957401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13957451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180 + ... + 5286.

It is an arithmetic number, because the mean of its divisors is an integer number (2329248).

Almost surely, 2^13957431 is an apocalyptic number.

13957431 is a deficient number, since it is larger than the sum of its proper divisors (4676553).

13957431 is an equidigital number, since it uses as much as digits as its factorization.

13957431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021.

The product of its digits is 11340, while the sum is 33.

The square root of 13957431 is about 3735.9645340929. The cubic root of 13957431 is about 240.7696990143.

The spelling of 13957431 in words is "thirteen million, nine hundred fifty-seven thousand, four hundred thirty-one".