31868255828 has 24 divisors (see below), whose sum is σ = 59150673792. Its totient is φ = 14971259264.

The previous prime is 31868255821. The next prime is 31868255831. The reversal of 31868255828 is 82855286813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31868255821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359276 + ... + 439107.

It is an arithmetic number, because the mean of its divisors is an integer number (2464611408).

Almost surely, 2^31868255828 is an apocalyptic number.

It is an amenable number.

31868255828 is a deficient number, since it is larger than the sum of its proper divisors (27282417964).

31868255828 is a wasteful number, since it uses less digits than its factorization.

31868255828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798991 (or 798989 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 56.

The spelling of 31868255828 in words is "thirty-one billion, eight hundred sixty-eight million, two hundred fifty-five thousand, eight hundred twenty-eight".