31303323323020 has 24 divisors (see below), whose sum is σ = 75127975975584. Its totient is φ = 10732567996416.

The previous prime is 31303323323011. The next prime is 31303323323033. The reversal of 31303323323020 is 2032332330313.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 31303323323020.

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, 111797583157 + ... + 111797583436.

It is an arithmetic number, because the mean of its divisors is an integer number (3130332332316).

Almost surely, 2^{31303323323020} is an apocalyptic number.

It is an amenable number.

31303323323020 is an abundant number, since it is smaller than the sum of its proper divisors (43824652652564).

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

31303323323020 is a wasteful number, since it uses less digits than its factorization.

31303323323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223595166609 (or 223595166607 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 28.

Adding to 31303323323020 its reverse (2032332330313), we get a palindrome (33335655653333).

The spelling of 31303323323020 in words is "thirty-one trillion, three hundred three billion, three hundred twenty-three million, three hundred twenty-three thousand, twenty".