31008472 has 16 divisors (see below), whose sum is σ = 63426600. Its totient is φ = 14094720.

The previous prime is 31008457. The next prime is 31008487. The reversal of 31008472 is 27480013.

It is an interprime number because it is at equal distance from previous prime (31008457) and next prime (31008487).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176097 + ... + 176272.

Almost surely, 2^31008472 is an apocalyptic number.

It is an amenable number.

31008472 is an abundant number, since it is smaller than the sum of its proper divisors (32418128).

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

31008472 is a wasteful number, since it uses less digits than its factorization.

31008472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352386 (or 352382 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 31008472 is about 5568.5251189161. The cubic root of 31008472 is about 314.1666795970.

Adding to 31008472 its reverse (27480013), we get a palindrome (58488485).

The spelling of 31008472 in words is "thirty-one million, eight thousand, four hundred seventy-two".