31312122033 has 4 divisors (see below), whose sum is σ = 41749496048. Its totient is φ = 20874748020.

The previous prime is 31312122031. The next prime is 31312122071. The reversal of 31312122033 is 33022121313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31312122033 - 2¹ = 31312122031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312122031) 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, 5218687003 + ... + 5218687008.

It is an arithmetic number, because the mean of its divisors is an integer number (10437374012).

Almost surely, 2^31312122033 is an apocalyptic number.

It is an amenable number.

31312122033 is a deficient number, since it is larger than the sum of its proper divisors (10437374015).

31312122033 is a wasteful number, since it uses less digits than its factorization.

31312122033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10437374014.

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

Adding to 31312122033 its reverse (33022121313), we get a palindrome (64334243346).

The spelling of 31312122033 in words is "thirty-one billion, three hundred twelve million, one hundred twenty-two thousand, thirty-three".