123213131001231 has 16 divisors (see below), whose sum is σ = 168919507991520. Its totient is φ = 79852858300800.

The previous prime is 123213131001193. The next prime is 123213131001277. The reversal of 123213131001231 is 132100131312321.

It is not a de Polignac number, because 123213131001231 - 2¹¹ = 123213130999183 is a prime.

It is a super-2 number, since 2×123213131001231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213131011231) 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, 3554686120 + ... + 3554720781.

It is an arithmetic number, because the mean of its divisors is an integer number (10557469249470).

Almost surely, 2^{123213131001231} is an apocalyptic number.

123213131001231 is a deficient number, since it is larger than the sum of its proper divisors (45706376990289).

123213131001231 is a wasteful number, since it uses less digits than its factorization.

123213131001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109407066.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 123213131001231 its reverse (132100131312321), we get a palindrome (255313262313552).

The spelling of 123213131001231 in words is "one hundred twenty-three trillion, two hundred thirteen billion, one hundred thirty-one million, one thousand, two hundred thirty-one".