31404322020 has 96 divisors (see below), whose sum is σ = 95621033088. Its totient is φ = 7668836352.

The previous prime is 31404322013. The next prime is 31404322049. The reversal of 31404322020 is 2022340413.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378322 + ... + 453801.

It is an arithmetic number, because the mean of its divisors is an integer number (996052428).

Almost surely, 2^31404322020 is an apocalyptic number.

31404322020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31404322020 is an abundant number, since it is smaller than the sum of its proper divisors (64216711068).

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

31404322020 is a wasteful number, since it uses less digits than its factorization.

31404322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832189 (or 832187 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 31404322020 its reverse (2022340413), we get a palindrome (33426662433).

The spelling of 31404322020 in words is "thirty-one billion, four hundred four million, three hundred twenty-two thousand, twenty".