31132110020 has 48 divisors (see below), whose sum is σ = 71758467648. Its totient is φ = 11251301760.

The previous prime is 31132110007. The next prime is 31132110041. The reversal of 31132110020 is 2001123113.

It is a junction number, because it is equal to n+sod(n) for n = 31132109977 and 31132110004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398219 + ... + 469938.

It is an arithmetic number, because the mean of its divisors is an integer number (1494968076).

Almost surely, 2^31132110020 is an apocalyptic number.

It is an amenable number.

31132110020 is an abundant number, since it is smaller than the sum of its proper divisors (40626357628).

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

31132110020 is a wasteful number, since it uses less digits than its factorization.

31132110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868340 (or 868338 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31132110020 its reverse (2001123113), we get a palindrome (33133233133).

The spelling of 31132110020 in words is "thirty-one billion, one hundred thirty-two million, one hundred ten thousand, twenty".