31374407 has 2 divisors, whose sum is σ = 31374408. Its totient is φ = 31374406.

The previous prime is 31374397. The next prime is 31374439. The reversal of 31374407 is 70447313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31374407 - 2⁸ = 31374151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31374407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31374467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15687203 + 15687204.

It is an arithmetic number, because the mean of its divisors is an integer number (15687204).

Almost surely, 2^31374407 is an apocalyptic number.

31374407 is a deficient number, since it is larger than the sum of its proper divisors (1).

31374407 is an equidigital number, since it uses as much as digits as its factorization.

31374407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 31374407 is about 5601.2861915814. The cubic root of 31374407 is about 315.3976903608.

The spelling of 31374407 in words is "thirty-one million, three hundred seventy-four thousand, four hundred seven".