315440251 has 8 divisors (see below), whose sum is σ = 360617184. Its totient is φ = 270291840.

The previous prime is 315440243. The next prime is 315440267. The reversal of 315440251 is 152044513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315440251 - 2³ = 315440243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315440231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28371 + ... + 37891.

It is an arithmetic number, because the mean of its divisors is an integer number (45077148).

Almost surely, 2^315440251 is an apocalyptic number.

315440251 is a deficient number, since it is larger than the sum of its proper divisors (45176933).

315440251 is an equidigital number, since it uses as much as digits as its factorization.

315440251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14261.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 315440251 is about 17760.6376856238. The cubic root of 315440251 is about 680.7260490462.

Adding to 315440251 its reverse (152044513), we get a palindrome (467484764).

The spelling of 315440251 in words is "three hundred fifteen million, four hundred forty thousand, two hundred fifty-one".