31321313023332 has 48 divisors (see below), whose sum is σ = 73870785644544. Its totient is φ = 10328085600000.

The previous prime is 31321313023291. The next prime is 31321313023339. The reversal of 31321313023332 is 23332031312313.

It is a self number, because there is not a number n which added to its sum of digits gives 31321313023332.

It is not an unprimeable number, because it can be changed into a prime (31321313023339) 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, 9831169 + ... + 12621192.

It is an arithmetic number, because the mean of its divisors is an integer number (1538974700928).

Almost surely, 2^{31321313023332} is an apocalyptic number.

It is an amenable number.

31321313023332 is an abundant number, since it is smaller than the sum of its proper divisors (42549472621212).

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

31321313023332 is a wasteful number, since it uses less digits than its factorization.

31321313023332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22453620 (or 22453618 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 30.

Adding to 31321313023332 its reverse (23332031312313), we get a palindrome (54653344335645).

The spelling of 31321313023332 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirteen million, twenty-three thousand, three hundred thirty-two".