31233031223 has 16 divisors (see below), whose sum is σ = 32538992640. Its totient is φ = 29953082016.

The previous prime is 31233031211. The next prime is 31233031259. The reversal of 31233031223 is 32213033213.

It is a cyclic number.

It is not a de Polignac number, because 31233031223 - 2⁸ = 31233030967 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 (31233031283) 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, 1336586 + ... + 1359752.

It is an arithmetic number, because the mean of its divisors is an integer number (2033687040).

Almost surely, 2^31233031223 is an apocalyptic number.

31233031223 is a deficient number, since it is larger than the sum of its proper divisors (1305961417).

31233031223 is a wasteful number, since it uses less digits than its factorization.

31233031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23726.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31233031223 its reverse (32213033213), we get a palindrome (63446064436).

The spelling of 31233031223 in words is "thirty-one billion, two hundred thirty-three million, thirty-one thousand, two hundred twenty-three".