312759197871 has 4 divisors (see below), whose sum is σ = 417012263832. Its totient is φ = 208506131912.

The previous prime is 312759197869. The next prime is 312759197887. The reversal of 312759197871 is 178791957213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178791957213 = 3 ⋅59597319071.

It is a cyclic number.

It is not a de Polignac number, because 312759197871 - 2¹ = 312759197869 is a prime.

It is a super-2 number, since 2×312759197871² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312759197171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52126532976 + ... + 52126532981.

It is an arithmetic number, because the mean of its divisors is an integer number (104253065958).

Almost surely, 2^312759197871 is an apocalyptic number.

312759197871 is a deficient number, since it is larger than the sum of its proper divisors (104253065961).

312759197871 is a wasteful number, since it uses less digits than its factorization.

312759197871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104253065960.

The product of its digits is 6667920, while the sum is 60.

The spelling of 312759197871 in words is "three hundred twelve billion, seven hundred fifty-nine million, one hundred ninety-seven thousand, eight hundred seventy-one".