712128309931 has 8 divisors (see below), whose sum is σ = 717009574400. Its totient is φ = 707253294312.

The previous prime is 712128309917. The next prime is 712128309947. The reversal of 712128309931 is 139903821217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 712128309931 - 2⁵ = 712128309899 is a prime.

It is a super-2 number, since 2×712128309931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712128309901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333395 + ... + 1789468.

It is an arithmetic number, because the mean of its divisors is an integer number (89626196800).

Almost surely, 2^712128309931 is an apocalyptic number.

712128309931 is a deficient number, since it is larger than the sum of its proper divisors (4881264469).

712128309931 is a wasteful number, since it uses less digits than its factorization.

712128309931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124425.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 712128309931 in words is "seven hundred twelve billion, one hundred twenty-eight million, three hundred nine thousand, nine hundred thirty-one".