31275203040 has 72 divisors (see below), whose sum is σ = 106726635288. Its totient is φ = 8340053760.

The previous prime is 31275203039. The next prime is 31275203087. The reversal of 31275203040 is 4030257213.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 31275202995 and 31275203013.

It is a congruent number.

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, 10858006 + ... + 10860885.

It is an arithmetic number, because the mean of its divisors is an integer number (1482314379).

Almost surely, 2^31275203040 is an apocalyptic number.

31275203040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31275203040 is an abundant number, since it is smaller than the sum of its proper divisors (75451432248).

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

31275203040 is a wasteful number, since it uses less digits than its factorization.

31275203040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21718912 (or 21718901 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The spelling of 31275203040 in words is "thirty-one billion, two hundred seventy-five million, two hundred three thousand, forty".