31322020323 has 16 divisors (see below), whose sum is σ = 46306179072. Its totient is φ = 18671844000.

The previous prime is 31322020321. The next prime is 31322020351. The reversal of 31322020323 is 32302022313.

It is not a de Polignac number, because 31322020323 - 2¹ = 31322020321 is a prime.

It is a super-2 number, since 2×31322020323² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31322020323.

It is not an unprimeable number, because it can be changed into a prime (31322020321) 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, 7777923 + ... + 7781948.

It is an arithmetic number, because the mean of its divisors is an integer number (2894136192).

Almost surely, 2^31322020323 is an apocalyptic number.

31322020323 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31322020323 is a deficient number, since it is larger than the sum of its proper divisors (14984158749).

31322020323 is a wasteful number, since it uses less digits than its factorization.

31322020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559946.

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

Adding to 31322020323 its reverse (32302022313), we get a palindrome (63624042636).

The spelling of 31322020323 in words is "thirty-one billion, three hundred twenty-two million, twenty thousand, three hundred twenty-three".