315231502153 has 4 divisors (see below), whose sum is σ = 315236637460. Its totient is φ = 315226366848.

The previous prime is 315231502147. The next prime is 315231502249. The reversal of 315231502153 is 351205132513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 226378027264 + 88853474889 = 475792^2 + 298083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315231502153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315231508153) 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, 2474448 + ... + 2598721.

It is an arithmetic number, because the mean of its divisors is an integer number (78809159365).

Almost surely, 2^315231502153 is an apocalyptic number.

It is an amenable number.

315231502153 is a deficient number, since it is larger than the sum of its proper divisors (5135307).

315231502153 is an equidigital number, since it uses as much as digits as its factorization.

315231502153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135306.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 315231502153 its reverse (351205132513), we get a palindrome (666436634666).

The spelling of 315231502153 in words is "three hundred fifteen billion, two hundred thirty-one million, five hundred two thousand, one hundred fifty-three".