315250649 has 4 divisors (see below), whose sum is σ = 360286464. Its totient is φ = 270214836.

The previous prime is 315250613. The next prime is 315250651. The reversal of 315250649 is 946052513.

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 a de Polignac number, because none of the positive numbers 2^k-315250649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315250609) 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, 22517897 + ... + 22517910.

It is an arithmetic number, because the mean of its divisors is an integer number (90071616).

Almost surely, 2^315250649 is an apocalyptic number.

It is an amenable number.

315250649 is a deficient number, since it is larger than the sum of its proper divisors (45035815).

315250649 is an equidigital number, since it uses as much as digits as its factorization.

315250649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45035814.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 315250649 is about 17755.2991808080. The cubic root of 315250649 is about 680.5896334725.

The spelling of 315250649 in words is "three hundred fifteen million, two hundred fifty thousand, six hundred forty-nine".