123431303993 has 16 divisors (see below), whose sum is σ = 127303847424. Its totient is φ = 119588011200.

The previous prime is 123431303953. The next prime is 123431304001. The reversal of 123431303993 is 399303134321.

It is a cyclic number.

It is not a de Polignac number, because 123431303993 - 2¹² = 123431299897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123431303993.

It is not an unprimeable number, because it can be changed into a prime (123431303953) 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, 9512396 + ... + 9525362.

It is an arithmetic number, because the mean of its divisors is an integer number (7956490464).

Almost surely, 2^123431303993 is an apocalyptic number.

It is an amenable number.

123431303993 is a deficient number, since it is larger than the sum of its proper divisors (3872543431).

123431303993 is a wasteful number, since it uses less digits than its factorization.

123431303993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072.

The product of its (nonzero) digits is 157464, while the sum is 41.

The spelling of 123431303993 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred three thousand, nine hundred ninety-three".