31079472 has 20 divisors (see below), whose sum is σ = 80288760. Its totient is φ = 10359808.

The previous prime is 31079471. The next prime is 31079507. The reversal of 31079472 is 27497013.

It is not an unprimeable number, because it can be changed into a prime (31079471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323697 + ... + 323792.

It is an arithmetic number, because the mean of its divisors is an integer number (4014438).

Almost surely, 2^31079472 is an apocalyptic number.

It is an amenable number.

31079472 is an abundant number, since it is smaller than the sum of its proper divisors (49209288).

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

31079472 is a wasteful number, since it uses less digits than its factorization.

31079472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647500 (or 647494 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 31079472 is about 5574.8965909692. The cubic root of 31079472 is about 314.4062789700.

It can be divided in two parts, 310794 and 72, that added together give a triangular number (310866 = T₇₈₈).

The spelling of 31079472 in words is "thirty-one million, seventy-nine thousand, four hundred seventy-two".