31212304023 has 4 divisors (see below), whose sum is σ = 41616405368. Its totient is φ = 20808202680.

The previous prime is 31212304001. The next prime is 31212304033. The reversal of 31212304023 is 32040321213.

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

It is not a de Polignac number, because 31212304023 - 2¹⁰ = 31212302999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212304033) 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, 5202050668 + ... + 5202050673.

It is an arithmetic number, because the mean of its divisors is an integer number (10404101342).

Almost surely, 2^31212304023 is an apocalyptic number.

31212304023 is a deficient number, since it is larger than the sum of its proper divisors (10404101345).

31212304023 is a wasteful number, since it uses less digits than its factorization.

31212304023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404101344.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31212304023 its reverse (32040321213), we get a palindrome (63252625236).

The spelling of 31212304023 in words is "thirty-one billion, two hundred twelve million, three hundred four thousand, twenty-three".