2021731012 has 12 divisors (see below), whose sum is σ = 4043462080. Its totient is φ = 866456136.

The previous prime is 2021731007. The next prime is 2021731013. The reversal of 2021731012 is 2101371202.

2021731012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2021731013) 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, 36102312 + ... + 36102367.

Almost surely, 2^2021731012 is an apocalyptic number.

It is an amenable number.

2021731012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2021731012 is a wasteful number, since it uses less digits than its factorization.

2021731012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72204690 (or 72204688 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2021731012 is about 44963.6632404434. The cubic root of 2021731012 is about 1264.4678482634.

The spelling of 2021731012 in words is "two billion, twenty-one million, seven hundred thirty-one thousand, twelve".