31011322323 has 4 divisors (see below), whose sum is σ = 41348429768. Its totient is φ = 20674214880.

The previous prime is 31011322301. The next prime is 31011322351. The reversal of 31011322323 is 32322311013.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31011322323 - 2¹⁷ = 31011191251 is a prime.

It is a super-2 number, since 2×31011322323² (a number of 22 digits) contains 22 as substring.

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 31011322323.

It is not an unprimeable number, because it can be changed into a prime (31011322723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5168553718 + ... + 5168553723.

It is an arithmetic number, because the mean of its divisors is an integer number (10337107442).

Almost surely, 2^31011322323 is an apocalyptic number.

31011322323 is a deficient number, since it is larger than the sum of its proper divisors (10337107445).

31011322323 is a wasteful number, since it uses less digits than its factorization.

31011322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337107444.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31011322323 its reverse (32322311013), we get a palindrome (63333633336).

The spelling of 31011322323 in words is "thirty-one billion, eleven million, three hundred twenty-two thousand, three hundred twenty-three".