315232040521 has 8 divisors (see below), whose sum is σ = 318201135560. Its totient is φ = 312264346752.

The previous prime is 315232040491. The next prime is 315232040561. The reversal of 315232040521 is 125040232513.

It can be written as a sum of positive squares in 4 ways, for example, as 43957734921 + 271274305600 = 209661^2 + 520840^2 .

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 315232040521 - 2⁵ = 315232040489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315232040521.

It is not an unprimeable number, because it can be changed into a prime (315232040561) 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, 104491 + ... + 800863.

It is an arithmetic number, because the mean of its divisors is an integer number (39775141945).

Almost surely, 2^315232040521 is an apocalyptic number.

It is an amenable number.

315232040521 is a deficient number, since it is larger than the sum of its proper divisors (2969095039).

315232040521 is a wasteful number, since it uses less digits than its factorization.

315232040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700635.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 315232040521 in words is "three hundred fifteen billion, two hundred thirty-two million, forty thousand, five hundred twenty-one".