31022202020 has 12 divisors (see below), whose sum is σ = 65146624284. Its totient is φ = 12408880800.

The previous prime is 31022202007. The next prime is 31022202053. The reversal of 31022202020 is 2020222013.

It can be written as a sum of positive squares in 2 ways, for example, as 15245334784 + 15776867236 = 123472^2 + 125606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31022201986 and 31022202004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775555031 + ... + 775555070.

It is an arithmetic number, because the mean of its divisors is an integer number (5428885357).

Almost surely, 2^31022202020 is an apocalyptic number.

It is an amenable number.

31022202020 is an abundant number, since it is smaller than the sum of its proper divisors (34124422264).

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

31022202020 is a wasteful number, since it uses less digits than its factorization.

31022202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551110110 (or 1551110108 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 31022202020 its reverse (2020222013), we get a palindrome (33042424033).

The spelling of 31022202020 in words is "thirty-one billion, twenty-two million, two hundred two thousand, twenty".