31126733020 has 12 divisors (see below), whose sum is σ = 65366139384. Its totient is φ = 12450693200.

The previous prime is 31126732999. The next prime is 31126733021. The reversal of 31126733020 is 2033762113.

It is a self number, because there is not a number n which added to its sum of digits gives 31126733020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31126733021) 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, 778168306 + ... + 778168345.

It is an arithmetic number, because the mean of its divisors is an integer number (5447178282).

Almost surely, 2^31126733020 is an apocalyptic number.

It is an amenable number.

31126733020 is an abundant number, since it is smaller than the sum of its proper divisors (34239406364).

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

31126733020 is a wasteful number, since it uses less digits than its factorization.

31126733020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556336660 (or 1556336658 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 31126733020 in words is "thirty-one billion, one hundred twenty-six million, seven hundred thirty-three thousand, twenty".