312838398977 has 8 divisors (see below), whose sum is σ = 337670329920. Its totient is φ = 288116102160.

The previous prime is 312838398947. The next prime is 312838399021. The reversal of 312838398977 is 779893838213.

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 312838398977 - 2¹⁰ = 312838397953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312838398947) 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, 27402599 + ... + 27414012.

It is an arithmetic number, because the mean of its divisors is an integer number (42208791240).

Almost surely, 2^312838398977 is an apocalyptic number.

It is an amenable number.

312838398977 is a deficient number, since it is larger than the sum of its proper divisors (24831930943).

312838398977 is a wasteful number, since it uses less digits than its factorization.

312838398977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54817063.

The product of its digits is 109734912, while the sum is 68.

The spelling of 312838398977 in words is "three hundred twelve billion, eight hundred thirty-eight million, three hundred ninety-eight thousand, nine hundred seventy-seven".