31204672 has 28 divisors (see below), whose sum is σ = 62944756. Its totient is φ = 15344640.

The previous prime is 31204661. The next prime is 31204681. The reversal of 31204672 is 27640213.

It can be written as a sum of positive squares in 2 ways, for example, as 1784896 + 29419776 = 1336^2 + 5424^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (2248027).

Almost surely, 2^31204672 is an apocalyptic number.

31204672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31204672 is an abundant number, since it is smaller than the sum of its proper divisors (31740084).

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

31204672 is an equidigital number, since it uses as much as digits as its factorization.

31204672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066 (or 8056 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 31204672 is about 5586.1142129391. The cubic root of 31204672 is about 314.8278962442.

Adding to 31204672 its reverse (27640213), we get a palindrome (58844885).

It can be divided in two parts, 3 and 1204672, that multiplied together give a triangular number (3614016 = T₂₆₈₈).

The spelling of 31204672 in words is "thirty-one million, two hundred four thousand, six hundred seventy-two".