31325254020 has 72 divisors (see below), whose sum is σ = 100020997440. Its totient is φ = 7913747520.

The previous prime is 31325254013. The next prime is 31325254021. The reversal of 31325254020 is 2045252313.

It is a happy number.

31325254020 is a `hidden beast` number, since 3 + 1 + 3 + 252 + 5 + 402 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (31325254021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4576296 + ... + 4583135.

It is an arithmetic number, because the mean of its divisors is an integer number (1389180520).

Almost surely, 2^31325254020 is an apocalyptic number.

31325254020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31325254020 is an abundant number, since it is smaller than the sum of its proper divisors (68695743420).

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

31325254020 is a wasteful number, since it uses less digits than its factorization.

31325254020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159465 (or 9159460 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 31325254020 in words is "thirty-one billion, three hundred twenty-five million, two hundred fifty-four thousand, twenty".