31274401 has 2 divisors, whose sum is σ = 31274402. Its totient is φ = 31274400.

The previous prime is 31274393. The next prime is 31274413. The reversal of 31274401 is 10447213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 13432225 = 4224^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 31274401 - 2³ = 31274393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31274491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15637200 + 15637201.

It is an arithmetic number, because the mean of its divisors is an integer number (15637201).

Almost surely, 2^31274401 is an apocalyptic number.

It is an amenable number.

31274401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31274401 is an equidigital number, since it uses as much as digits as its factorization.

31274401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 31274401 is about 5592.3520096646. The cubic root of 31274401 is about 315.0622233676.

The spelling of 31274401 in words is "thirty-one million, two hundred seventy-four thousand, four hundred one".