31008474 has 48 divisors (see below), whose sum is σ = 80164800. Its totient is φ = 8858808.

The previous prime is 31008457. The next prime is 31008487. The reversal of 31008474 is 47480013.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3214 + ... + 8505.

It is an arithmetic number, because the mean of its divisors is an integer number (1670100).

Almost surely, 2^31008474 is an apocalyptic number.

31008474 is an abundant number, since it is smaller than the sum of its proper divisors (49156326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31008474 is a wasteful number, since it uses less digits than its factorization.

31008474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11744 (or 11731 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 31008474 is about 5568.5252984969. The cubic root of 31008474 is about 314.1666863514.

Adding to 31008474 its reverse (47480013), we get a palindrome (78488487).

The spelling of 31008474 in words is "thirty-one million, eight thousand, four hundred seventy-four".