31072048 has 20 divisors (see below), whose sum is σ = 68802640. Its totient is φ = 13316544.

The previous prime is 31072037. The next prime is 31072091. The reversal of 31072048 is 84027013.

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, 138603 + ... + 138826.

It is an arithmetic number, because the mean of its divisors is an integer number (3440132).

Almost surely, 2^31072048 is an apocalyptic number.

It is an amenable number.

31072048 is an abundant number, since it is smaller than the sum of its proper divisors (37730592).

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

31072048 is a wasteful number, since it uses less digits than its factorization.

31072048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277444 (or 277438 counting only the distinct ones).

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

The square root of 31072048 is about 5574.2307092549. The cubic root of 31072048 is about 314.3812427435.

The spelling of 31072048 in words is "thirty-one million, seventy-two thousand, forty-eight".