31446290020 has 24 divisors (see below), whose sum is σ = 66147480000. Its totient is φ = 12557512032.

The previous prime is 31446290017. The next prime is 31446290021. The reversal of 31446290020 is 2009264413.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31446290021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300470 + ... + 1324429.

It is an arithmetic number, because the mean of its divisors is an integer number (2756145000).

Almost surely, 2^31446290020 is an apocalyptic number.

It is an amenable number.

31446290020 is an abundant number, since it is smaller than the sum of its proper divisors (34701189980).

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

31446290020 is a wasteful number, since it uses less digits than its factorization.

31446290020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625507 (or 2625505 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 31446290020 in words is "thirty-one billion, four hundred forty-six million, two hundred ninety thousand, twenty".