315504031145 has 4 divisors (see below), whose sum is σ = 378604837380. Its totient is φ = 252403224912.

The previous prime is 315504031123. The next prime is 315504031151. The reversal of 315504031145 is 541130405513.

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 237172896016 + 78331135129 = 487004^2 + 279877^2 .

It is a cyclic number.

It is not a de Polignac number, because 315504031145 - 2⁶ = 315504031081 is a prime.

It is a super-2 number, since 2×315504031145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31550403110 + ... + 31550403119.

It is an arithmetic number, because the mean of its divisors is an integer number (94651209345).

Almost surely, 2^315504031145 is an apocalyptic number.

It is an amenable number.

315504031145 is a deficient number, since it is larger than the sum of its proper divisors (63100806235).

315504031145 is an equidigital number, since it uses as much as digits as its factorization.

315504031145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63100806234.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 315504031145 its reverse (541130405513), we get a palindrome (856634436658).

The spelling of 315504031145 in words is "three hundred fifteen billion, five hundred four million, thirty-one thousand, one hundred forty-five".