123213132001231 has 16 divisors (see below), whose sum is σ = 123520163100768. Its totient is φ = 122906393625600.

The previous prime is 123213132001177. The next prime is 123213132001273. The reversal of 123213132001231 is 132100231312321.

It is a cyclic number.

It is not a de Polignac number, because 123213132001231 - 2⁷ = 123213132001103 is a prime.

It is a super-2 number, since 2×123213132001231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123213132001196 and 123213132001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213132001291) 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, 10308128551 + ... + 10308140503.

It is an arithmetic number, because the mean of its divisors is an integer number (7720010193798).

Almost surely, 2^{123213132001231} is an apocalyptic number.

123213132001231 is a deficient number, since it is larger than the sum of its proper divisors (307031099537).

123213132001231 is a wasteful number, since it uses less digits than its factorization.

123213132001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22122.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 123213132001231 its reverse (132100231312321), we get a palindrome (255313363313552).

The spelling of 123213132001231 in words is "one hundred twenty-three trillion, two hundred thirteen billion, one hundred thirty-two million, one thousand, two hundred thirty-one".