31313200323 has 16 divisors (see below), whose sum is σ = 42924396416. Its totient is φ = 20293338240.

The previous prime is 31313200319. The next prime is 31313200327. The reversal of 31313200323 is 32300231313.

It is an interprime number because it is at equal distance from previous prime (31313200319) and next prime (31313200327).

It is not a de Polignac number, because 31313200323 - 2² = 31313200319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31313200323.

It is not an unprimeable number, because it can be changed into a prime (31313200327) 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, 547990 + ... + 602427.

It is an arithmetic number, because the mean of its divisors is an integer number (2682774776).

Almost surely, 2^31313200323 is an apocalyptic number.

31313200323 is a deficient number, since it is larger than the sum of its proper divisors (11611196093).

31313200323 is a wasteful number, since it uses less digits than its factorization.

31313200323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150674.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31313200323 its reverse (32300231313), we get a palindrome (63613431636).

The spelling of 31313200323 in words is "thirty-one billion, three hundred thirteen million, two hundred thousand, three hundred twenty-three".