315253316261 has 8 divisors (see below), whose sum is σ = 351210591480. Its totient is φ = 280968472512.

The previous prime is 315253316251. The next prime is 315253316297. The reversal of 315253316261 is 162613352513.

It can be written as a sum of positive squares in 4 ways, for example, as 341547361 + 314911768900 = 18481^2 + 561170^2 .

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

It is not a de Polignac number, because 315253316261 - 2³⁰ = 314179574437 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 (315253316221) 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, 418107470 + ... + 418108223.

It is an arithmetic number, because the mean of its divisors is an integer number (43901323935).

Almost surely, 2^315253316261 is an apocalyptic number.

It is an amenable number.

315253316261 is a deficient number, since it is larger than the sum of its proper divisors (35957275219).

315253316261 is a wasteful number, since it uses less digits than its factorization.

315253316261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836215735.

The product of its digits is 97200, while the sum is 38.

Adding to 315253316261 its reverse (162613352513), we get a palindrome (477866668774).

The spelling of 315253316261 in words is "three hundred fifteen billion, two hundred fifty-three million, three hundred sixteen thousand, two hundred sixty-one".