31404220022020 has 12 divisors (see below), whose sum is σ = 65948862046284. Its totient is φ = 12561688008800.

The previous prime is 31404220022017. The next prime is 31404220022051. The reversal of 31404220022020 is 2022002240413.

It can be written as a sum of positive squares in 2 ways, for example, as 23713237901376 + 7690982120644 = 4869624^2 + 2773262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31404220021982 and 31404220022000.

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, 785105500531 + ... + 785105500570.

It is an arithmetic number, because the mean of its divisors is an integer number (5495738503857).

Almost surely, 2^{31404220022020} is an apocalyptic number.

It is an amenable number.

31404220022020 is an abundant number, since it is smaller than the sum of its proper divisors (34544642024264).

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

31404220022020 is a wasteful number, since it uses less digits than its factorization.

31404220022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570211001110 (or 1570211001108 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31404220022020 its reverse (2022002240413), we get a palindrome (33426222262433).

The spelling of 31404220022020 in words is "thirty-one trillion, four hundred four billion, two hundred twenty million, twenty-two thousand, twenty".