123351496731 has 16 divisors (see below), whose sum is σ = 187200105120. Its totient is φ = 80228615040.

The previous prime is 123351496727. The next prime is 123351496747. The reversal of 123351496731 is 137694153321.

123351496731 is a `hidden beast` number, since 12 + 3 + 3 + 514 + 96 + 7 + 31 = 666.

It is not a de Polignac number, because 123351496731 - 2² = 123351496727 is a prime.

It is a super-2 number, since 2×123351496731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123351496231) 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, 55713210 + ... + 55715423.

It is an arithmetic number, because the mean of its divisors is an integer number (11700006570).

Almost surely, 2^123351496731 is an apocalyptic number.

123351496731 is a deficient number, since it is larger than the sum of its proper divisors (63848608389).

123351496731 is a wasteful number, since it uses less digits than its factorization.

123351496731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111428683 (or 111428677 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 123351496731 in words is "one hundred twenty-three billion, three hundred fifty-one million, four hundred ninety-six thousand, seven hundred thirty-one".