315442051 has 4 divisors (see below), whose sum is σ = 322153632. Its totient is φ = 308730472.

The previous prime is 315442027. The next prime is 315442063. The reversal of 315442051 is 150244513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150244513 = 257 ⋅584609.

It is a cyclic number.

It is not a de Polignac number, because 315442051 - 2⁷ = 315441923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315442951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3355720 + ... + 3355813.

It is an arithmetic number, because the mean of its divisors is an integer number (80538408).

Almost surely, 2^315442051 is an apocalyptic number.

315442051 is a deficient number, since it is larger than the sum of its proper divisors (6711581).

315442051 is an equidigital number, since it uses as much as digits as its factorization.

315442051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711580.

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

The square root of 315442051 is about 17760.6883594077. The cubic root of 315442051 is about 680.7273438552.

Adding to 315442051 its reverse (150244513), we get a palindrome (465686564).

The spelling of 315442051 in words is "three hundred fifteen million, four hundred forty-two thousand, fifty-one".