315977073721 has 8 divisors (see below), whose sum is σ = 317414462400. Its totient is φ = 314540186160.

The previous prime is 315977073701. The next prime is 315977073749. The reversal of 315977073721 is 127370779513.

It is a happy number.

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 315977073721 - 2⁷ = 315977073593 is a prime.

It is a super-2 number, since 2×315977073721² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315977073701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168986 + ... + 1413676.

It is an arithmetic number, because the mean of its divisors is an integer number (39676807800).

Almost surely, 2^315977073721 is an apocalyptic number.

It is an amenable number.

315977073721 is a deficient number, since it is larger than the sum of its proper divisors (1437388679).

315977073721 is a wasteful number, since it uses less digits than its factorization.

315977073721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250559.

The product of its (nonzero) digits is 1944810, while the sum is 52.

The spelling of 315977073721 in words is "three hundred fifteen billion, nine hundred seventy-seven million, seventy-three thousand, seven hundred twenty-one".