31233221221323 has 16 divisors (see below), whose sum is σ = 45660749815296. Its totient is φ = 18833137542240.

The previous prime is 31233221221303. The next prime is 31233221221369. The reversal of 31233221221323 is 32312212233213.

It is not a de Polignac number, because 31233221221323 - 2⁶ = 31233221221259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31233221221303) 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, 2402179411 + ... + 2402192412.

It is an arithmetic number, because the mean of its divisors is an integer number (2853796863456).

Almost surely, 2^{31233221221323} is an apocalyptic number.

31233221221323 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31233221221323 is a deficient number, since it is larger than the sum of its proper divisors (14427528593973).

31233221221323 is a wasteful number, since it uses less digits than its factorization.

31233221221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4804372034.

The product of its digits is 15552, while the sum is 30.

Adding to 31233221221323 its reverse (32312212233213), we get a palindrome (63545433454536).

The spelling of 31233221221323 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty-one million, two hundred twenty-one thousand, three hundred twenty-three".