311394132729 has 15 divisors (see below), whose sum is σ = 465176515573. Its totient is φ = 207592740324.

The previous prime is 311394132697. The next prime is 311394132761. The reversal of 311394132729 is 927231493113.

The square root of 311394132729 is 558027.

It is a perfect power (a square), and thus also a powerful number.

311394132729 is a `hidden beast` number, since 31 + 139 + 413 + 2 + 72 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (311394132697) and next prime (311394132761).

It is not a de Polignac number, because 311394132729 - 2⁵ = 311394132697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311394132779) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4991242 + ... + 5053244.

Almost surely, 2^311394132729 is an apocalyptic number.

311394132729 is the 558027-th square number.

311394132729 is the 279014-th centered octagonal number.

It is an amenable number.

311394132729 is a deficient number, since it is larger than the sum of its proper divisors (153782382844).

311394132729 is an frugal number, since it uses more digits than its factorization.

311394132729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124018 (or 62006 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The spelling of 311394132729 in words is "three hundred eleven billion, three hundred ninety-four million, one hundred thirty-two thousand, seven hundred twenty-nine".