313231131332 has 72 divisors (see below), whose sum is σ = 651536178048. Its totient is φ = 131321131200.

The previous prime is 313231131329. The next prime is 313231131349. The reversal of 313231131332 is 233131132313.

It is a super-2 number, since 2×313231131332² (a number of 24 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 21834482 + ... + 21848822.

It is an arithmetic number, because the mean of its divisors is an integer number (9049113584).

Almost surely, 2^313231131332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313231131332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325768089024).

313231131332 is an abundant number, since it is smaller than the sum of its proper divisors (338305046716).

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

313231131332 is a wasteful number, since it uses less digits than its factorization.

313231131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16777 (or 16768 counting only the distinct ones).

The product of its digits is 2916, while the sum is 26.

Adding to 313231131332 its reverse (233131132313), we get a palindrome (546362263645).

The spelling of 313231131332 in words is "three hundred thirteen billion, two hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-two".