31232023320 has 32 divisors (see below), whose sum is σ = 93696070320. Its totient is φ = 8328539520.

The previous prime is 31232023307. The next prime is 31232023321. The reversal of 31232023320 is 2332023213.

It is a super-2 number, since 2×31232023320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232023321) by changing a digit.

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, 130133311 + ... + 130133550.

Almost surely, 2^31232023320 is an apocalyptic number.

31232023320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31232023320 is an abundant number, since it is smaller than the sum of its proper divisors (62464047000).

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

31232023320 is a wasteful number, since it uses less digits than its factorization.

31232023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260266875 (or 260266871 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31232023320 its reverse (2332023213), we get a palindrome (33564046533).

The spelling of 31232023320 in words is "thirty-one billion, two hundred thirty-two million, twenty-three thousand, three hundred twenty".