315116251 has 6 divisors (see below), whose sum is σ = 316026620. Its totient is φ = 314207928.

The previous prime is 315116239. The next prime is 315116281. The reversal of 315116251 is 152611513.

It is a happy number.

It is not a de Polignac number, because 315116251 - 2¹⁷ = 314985179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315116281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426040 + ... + 426778.

Almost surely, 2^315116251 is an apocalyptic number.

315116251 is a deficient number, since it is larger than the sum of its proper divisors (910369).

315116251 is an frugal number, since it uses more digits than its factorization.

315116251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 1392 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 315116251 is about 17751.5140481031. The cubic root of 315116251 is about 680.4929031539.

Adding to 315116251 its reverse (152611513), we get a palindrome (467727764).

The spelling of 315116251 in words is "three hundred fifteen million, one hundred sixteen thousand, two hundred fifty-one".