31032122020 has 24 divisors (see below), whose sum is σ = 68597323200. Its totient is φ = 11759540832.

The previous prime is 31032121999. The next prime is 31032122041. The reversal of 31032122020 is 2022123013.

It is an interprime number because it is at equal distance from previous prime (31032121999) and next prime (31032122041).

It is a junction number, because it is equal to n+sod(n) for n = 31032121985 and 31032122003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40831360 + ... + 40832119.

It is an arithmetic number, because the mean of its divisors is an integer number (2858221800).

Almost surely, 2^31032122020 is an apocalyptic number.

It is an amenable number.

31032122020 is an abundant number, since it is smaller than the sum of its proper divisors (37565201180).

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

31032122020 is a wasteful number, since it uses less digits than its factorization.

31032122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81663507 (or 81663505 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31032122020 its reverse (2022123013), we get a palindrome (33054245033).

The spelling of 31032122020 in words is "thirty-one billion, thirty-two million, one hundred twenty-two thousand, twenty".