315684937981 has 8 divisors (see below), whose sum is σ = 360795538304. Its totient is φ = 270577525680.

The previous prime is 315684937951. The next prime is 315684938021. The reversal of 315684937981 is 189739486513.

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

It is not a de Polignac number, because 315684937981 - 2⁵ = 315684937949 is a prime.

It is a super-2 number, since 2×315684937981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315684937951) 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, 580905 + ... + 984286.

It is an arithmetic number, because the mean of its divisors is an integer number (45099442288).

Almost surely, 2^315684937981 is an apocalyptic number.

It is an amenable number.

315684937981 is a deficient number, since it is larger than the sum of its proper divisors (45110600323).

315684937981 is a wasteful number, since it uses less digits than its factorization.

315684937981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594011.

The product of its digits is 39191040, while the sum is 64.

The spelling of 315684937981 in words is "three hundred fifteen billion, six hundred eighty-four million, nine hundred thirty-seven thousand, nine hundred eighty-one".