315612403231061 has 4 divisors (see below), whose sum is σ = 315612443114124. Its totient is φ = 315612363348000.

The previous prime is 315612403231049. The next prime is 315612403231087. The reversal of 315612403231061 is 160132304216513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 184042189426225 + 131570213804836 = 13566215^2 + 11470406^2 .

It is a cyclic number.

It is not a de Polignac number, because 315612403231061 - 2⁶ = 315612403230997 is a prime.

It is a super-2 number, since 2×315612403231061² (a number of 30 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 (315612403231001) 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, 3616640 + ... + 25383161.

It is an arithmetic number, because the mean of its divisors is an integer number (78903110778531).

Almost surely, 2^{315612403231061} is an apocalyptic number.

It is an amenable number.

315612403231061 is a deficient number, since it is larger than the sum of its proper divisors (39883063).

315612403231061 is a wasteful number, since it uses less digits than its factorization.

315612403231061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39883062.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 315612403231061 its reverse (160132304216513), we get a palindrome (475744707447574).

The spelling of 315612403231061 in words is "three hundred fifteen trillion, six hundred twelve billion, four hundred three million, two hundred thirty-one thousand, sixty-one".