123402231212013 has 24 divisors (see below), whose sum is σ = 192104560327680. Its totient is φ = 75882260702880.

The previous prime is 123402231211933. The next prime is 123402231212041. The reversal of 123402231212013 is 310212132204321.

123402231212013 is a `hidden beast` number, since 1 + 2 + 3 + 402 + 2 + 31 + 21 + 201 + 3 = 666.

It is not a de Polignac number, because 123402231212013 - 2¹³ = 123402231203821 is a prime.

It is a super-2 number, since 2×123402231212013² (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 (123402231212093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399663693 + ... + 399972338.

It is an arithmetic number, because the mean of its divisors is an integer number (8004356680320).

Almost surely, 2^{123402231212013} is an apocalyptic number.

123402231212013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123402231212013 is a deficient number, since it is larger than the sum of its proper divisors (68702329115667).

123402231212013 is a wasteful number, since it uses less digits than its factorization.

123402231212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799637369 (or 799637366 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 123402231212013 its reverse (310212132204321), we get a palindrome (433614363416334).

The spelling of 123402231212013 in words is "one hundred twenty-three trillion, four hundred two billion, two hundred thirty-one million, two hundred twelve thousand, thirteen".