315168061 has 4 divisors (see below), whose sum is σ = 339411772. Its totient is φ = 290924352.

The previous prime is 315168047. The next prime is 315168101. The reversal of 315168061 is 160861513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160861513 = 1789 ⋅89917.

It can be written as a sum of positive squares in 2 ways, for example, as 191268900 + 123899161 = 13830^2 + 11131^2 .

It is a cyclic number.

It is not a de Polignac number, because 315168061 - 2¹¹ = 315166013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315168001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12121836 + ... + 12121861.

It is an arithmetic number, because the mean of its divisors is an integer number (84852943).

Almost surely, 2^315168061 is an apocalyptic number.

It is an amenable number.

315168061 is a deficient number, since it is larger than the sum of its proper divisors (24243711).

315168061 is a wasteful number, since it uses less digits than its factorization.

315168061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24243710.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 315168061 is about 17752.9733002672. The cubic root of 315168061 is about 680.5301956400.

The spelling of 315168061 in words is "three hundred fifteen million, one hundred sixty-eight thousand, sixty-one".