315125849 has 4 divisors (see below), whose sum is σ = 331711440. Its totient is φ = 298540260.

The previous prime is 315125843. The next prime is 315125873. The reversal of 315125849 is 948521513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315125849 - 2¹⁶ = 315060313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315125843) 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, 8292767 + ... + 8292804.

It is an arithmetic number, because the mean of its divisors is an integer number (82927860).

Almost surely, 2^315125849 is an apocalyptic number.

It is an amenable number.

315125849 is a deficient number, since it is larger than the sum of its proper divisors (16585591).

315125849 is a wasteful number, since it uses less digits than its factorization.

315125849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16585590.

The product of its digits is 43200, while the sum is 38.

The square root of 315125849 is about 17751.7843891818. The cubic root of 315125849 is about 680.4998120376.

The spelling of 315125849 in words is "three hundred fifteen million, one hundred twenty-five thousand, eight hundred forty-nine".