31213300233 has 16 divisors (see below), whose sum is σ = 43466996160. Its totient is φ = 19903300416.

The previous prime is 31213300189. The next prime is 31213300289. The reversal of 31213300233 is 33200331213.

It is not a de Polignac number, because 31213300233 - 2⁶ = 31213300169 is a prime.

It is a super-2 number, since 2×31213300233² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31213300133) 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, 2376510 + ... + 2389607.

It is an arithmetic number, because the mean of its divisors is an integer number (2716687260).

Almost surely, 2^31213300233 is an apocalyptic number.

It is an amenable number.

31213300233 is a deficient number, since it is larger than the sum of its proper divisors (12253695927).

31213300233 is a wasteful number, since it uses less digits than its factorization.

31213300233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766216.

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

Adding to 31213300233 its reverse (33200331213), we get a palindrome (64413631446).

The spelling of 31213300233 in words is "thirty-one billion, two hundred thirteen million, three hundred thousand, two hundred thirty-three".