31112648 has 48 divisors (see below), whose sum is σ = 68468400. Its totient is φ = 13214880.

The previous prime is 31112617. The next prime is 31112651. The reversal of 31112648 is 84621113.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54203 + ... + 54773.

It is an arithmetic number, because the mean of its divisors is an integer number (1426425).

Almost surely, 2^31112648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31112648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34234200).

31112648 is an abundant number, since it is smaller than the sum of its proper divisors (37355752).

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

31112648 is a wasteful number, since it uses less digits than its factorization.

31112648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 719 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 31112648 is about 5577.8712785435. The cubic root of 31112648 is about 314.5181109154.

The spelling of 31112648 in words is "thirty-one million, one hundred twelve thousand, six hundred forty-eight".