12931401 has 16 divisors (see below), whose sum is σ = 19798400. Its totient is φ = 7354368.

The previous prime is 12931393. The next prime is 12931409. The reversal of 12931401 is 10413921.

It is an interprime number because it is at equal distance from previous prime (12931393) and next prime (12931409).

It is not a de Polignac number, because 12931401 - 2³ = 12931393 is a prime.

It is a super-2 number, since 2×12931401² = 334442263645602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12931409) 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, 3465 + ... + 6153.

It is an arithmetic number, because the mean of its divisors is an integer number (1237400).

Almost surely, 2^12931401 is an apocalyptic number.

It is an amenable number.

12931401 is a deficient number, since it is larger than the sum of its proper divisors (6866999).

12931401 is a wasteful number, since it uses less digits than its factorization.

12931401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 12931401 is about 3596.0257229336. The cubic root of 12931401 is about 234.7191514389.

The spelling of 12931401 in words is "twelve million, nine hundred thirty-one thousand, four hundred one".