31132133320 has 64 divisors (see below), whose sum is σ = 74612119680. Its totient is φ = 11650108416.

The previous prime is 31132133297. The next prime is 31132133341. The reversal of 31132133320 is 2333123113.

It is a junction number, because it is equal to n+sod(n) for n = 31132133291 and 31132133300.

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, 23514 + ... + 250633.

It is an arithmetic number, because the mean of its divisors is an integer number (1165814370).

Almost surely, 2^31132133320 is an apocalyptic number.

It is an amenable number.

31132133320 is an abundant number, since it is smaller than the sum of its proper divisors (43479986360).

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

31132133320 is a wasteful number, since it uses less digits than its factorization.

31132133320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274342 (or 274338 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31132133320 its reverse (2333123113), we get a palindrome (33465256433).

The spelling of 31132133320 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, three hundred twenty".