31940048 has 20 divisors (see below), whose sum is σ = 70724640. Its totient is φ = 13688544.

The previous prime is 31940047. The next prime is 31940057. The reversal of 31940048 is 84004913.

It is a super-3 number, since 3×31940048³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31940048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31940047) 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, 142478 + ... + 142701.

It is an arithmetic number, because the mean of its divisors is an integer number (3536232).

Almost surely, 2^31940048 is an apocalyptic number.

It is an amenable number.

31940048 is an abundant number, since it is smaller than the sum of its proper divisors (38784592).

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

31940048 is a wasteful number, since it uses less digits than its factorization.

31940048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285194 (or 285188 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31940048 is about 5651.5527070001. The cubic root of 31940048 is about 317.2818200559.

The spelling of 31940048 in words is "thirty-one million, nine hundred forty thousand, forty-eight".