423657215931 has 16 divisors (see below), whose sum is σ = 573340809600. Its totient is φ = 278235377088.

The previous prime is 423657215837. The next prime is 423657215963. The reversal of 423657215931 is 139512756324.

It is a de Polignac number, because none of the positive numbers 2^k-423657215931 is a prime.

It is a super-2 number, since 2×423657215931² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423657215131) 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, 3629146 + ... + 3744063.

It is an arithmetic number, because the mean of its divisors is an integer number (35833800600).

Almost surely, 2^423657215931 is an apocalyptic number.

423657215931 is a deficient number, since it is larger than the sum of its proper divisors (149683593669).

423657215931 is a wasteful number, since it uses less digits than its factorization.

423657215931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373498.

The product of its digits is 1360800, while the sum is 48.

The spelling of 423657215931 in words is "four hundred twenty-three billion, six hundred fifty-seven million, two hundred fifteen thousand, nine hundred thirty-one".