315240414021 has 12 divisors (see below), whose sum is σ = 490373977548. Its totient is φ = 193994100864.

The previous prime is 315240414007. The next prime is 315240414031. The reversal of 315240414021 is 120414042513.

315240414021 is a `hidden beast` number, since 3 + 1 + 5 + 240 + 414 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 186961112100 + 128279301921 = 432390^2 + 358161^2 .

It is not a de Polignac number, because 315240414021 - 2⁵ = 315240413989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315240414031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1347181140 + ... + 1347181373.

It is an arithmetic number, because the mean of its divisors is an integer number (40864498129).

Almost surely, 2^315240414021 is an apocalyptic number.

It is an amenable number.

315240414021 is a deficient number, since it is larger than the sum of its proper divisors (175133563527).

315240414021 is a wasteful number, since it uses less digits than its factorization.

315240414021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694362532 (or 2694362529 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 315240414021 its reverse (120414042513), we get a palindrome (435654456534).

The spelling of 315240414021 in words is "three hundred fifteen billion, two hundred forty million, four hundred fourteen thousand, twenty-one".