31374477 has 12 divisors (see below), whose sum is σ = 46373184. Its totient is φ = 20429640.

The previous prime is 31374467. The next prime is 31374481. The reversal of 31374477 is 77447313.

It is not a de Polignac number, because 31374477 - 2⁷ = 31374349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31374407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40149 + ... + 40922.

It is an arithmetic number, because the mean of its divisors is an integer number (3864432).

Almost surely, 2^31374477 is an apocalyptic number.

It is an amenable number.

31374477 is a deficient number, since it is larger than the sum of its proper divisors (14998707).

31374477 is a wasteful number, since it uses less digits than its factorization.

31374477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81120 (or 81117 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 31374477 is about 5601.2924401427. The cubic root of 31374477 is about 315.3979249238.

The spelling of 31374477 in words is "thirty-one million, three hundred seventy-four thousand, four hundred seventy-seven".