31232505020 has 24 divisors (see below), whose sum is σ = 65591915424. Its totient is φ = 12492305856.

The previous prime is 31232505013. The next prime is 31232505103. The reversal of 31232505020 is 2050523213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475202 + ... + 536918.

It is an arithmetic number, because the mean of its divisors is an integer number (2732996476).

Almost surely, 2^31232505020 is an apocalyptic number.

It is an amenable number.

31232505020 is an abundant number, since it is smaller than the sum of its proper divisors (34359410404).

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

31232505020 is a wasteful number, since it uses less digits than its factorization.

31232505020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87029 (or 87027 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The spelling of 31232505020 in words is "thirty-one billion, two hundred thirty-two million, five hundred five thousand, twenty".