123402015334431 has 12 divisors (see below), whose sum is σ = 178280407167408. Its totient is φ = 82252755599424.

The previous prime is 123402015334417. The next prime is 123402015334439. The reversal of 123402015334431 is 134433510204321.

123402015334431 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 0 + 201 + 5 + 3 + 3 + 443 + 1 = 666.

It is not a de Polignac number, because 123402015334431 - 2⁵ = 123402015334399 is a prime.

It is a super-2 number, since 2×123402015334431² (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 (123402015334439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271167395 + ... + 1271264468.

It is an arithmetic number, because the mean of its divisors is an integer number (14856700597284).

Almost surely, 2^{123402015334431} is an apocalyptic number.

123402015334431 is a deficient number, since it is larger than the sum of its proper divisors (54878391832977).

123402015334431 is a wasteful number, since it uses less digits than its factorization.

123402015334431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542437262 (or 2542437259 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 123402015334431 its reverse (134433510204321), we get a palindrome (257835525538752).

The spelling of 123402015334431 in words is "one hundred twenty-three trillion, four hundred two billion, fifteen million, three hundred thirty-four thousand, four hundred thirty-one".