31323313232 has 40 divisors (see below), whose sum is σ = 63592715520. Its totient is φ = 14917992320.

The previous prime is 31323313169. The next prime is 31323313261. The reversal of 31323313232 is 23231332313.

It is a happy number.

It is a super-2 number, since 2×31323313232² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90119 + ... + 266022.

It is an arithmetic number, because the mean of its divisors is an integer number (1589817888).

Almost surely, 2^31323313232 is an apocalyptic number.

It is an amenable number.

31323313232 is an abundant number, since it is smaller than the sum of its proper divisors (32269402288).

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

31323313232 is a wasteful number, since it uses less digits than its factorization.

31323313232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356411 (or 356405 counting only the distinct ones).

The product of its digits is 5832, while the sum is 26.

Adding to 31323313232 its reverse (23231332313), we get a palindrome (54554645545).

The spelling of 31323313232 in words is "thirty-one billion, three hundred twenty-three million, three hundred thirteen thousand, two hundred thirty-two".