31233022320 has 80 divisors (see below), whose sum is σ = 101918298240. Its totient is φ = 7890446592.

The previous prime is 31233022313. The next prime is 31233022321. The reversal of 31233022320 is 2322033213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233022321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3420114 + ... + 3429233.

It is an arithmetic number, because the mean of its divisors is an integer number (1273978728).

Almost surely, 2^31233022320 is an apocalyptic number.

31233022320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31233022320 is an abundant number, since it is smaller than the sum of its proper divisors (70685275920).

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

31233022320 is a wasteful number, since it uses less digits than its factorization.

31233022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6849382 (or 6849376 counting only the distinct ones).

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

Adding to 31233022320 its reverse (2322033213), we get a palindrome (33555055533).

The spelling of 31233022320 in words is "thirty-one billion, two hundred thirty-three million, twenty-two thousand, three hundred twenty".