31716472 has 64 divisors (see below), whose sum is σ = 66355200. Its totient is φ = 14152320.

The previous prime is 31716463. The next prime is 31716479. The reversal of 31716472 is 27461713.

It is a super-2 number, since 2×31716472² = 2011869192253568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31716479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249673 + ... + 249799.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

It is a vampire number, since it can be written as 4712 ⋅ 6731 (with its own digits).

Almost surely, 2^31716472 is an apocalyptic number.

It is an amenable number.

31716472 is an abundant number, since it is smaller than the sum of its proper divisors (34638728).

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

31716472 is a wasteful number, since it uses less digits than its factorization.

31716472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 232 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 31716472 is about 5631.7379200385. The cubic root of 31716472 is about 316.5397760614.

The spelling of 31716472 in words is "thirty-one million, seven hundred sixteen thousand, four hundred seventy-two".