315120451 has 2 divisors, whose sum is σ = 315120452. Its totient is φ = 315120450.

The previous prime is 315120437. The next prime is 315120473. The reversal of 315120451 is 154021513.

It is a happy number.

It is an a-pointer prime, because the next prime (315120473) can be obtained adding 315120451 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315120451 - 2¹¹ = 315118403 is a prime.

It is not a weakly prime, because it can be changed into another prime (315127451) 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 as a sum of consecutive naturals, namely, 157560225 + 157560226.

It is an arithmetic number, because the mean of its divisors is an integer number (157560226).

Almost surely, 2^315120451 is an apocalyptic number.

315120451 is a deficient number, since it is larger than the sum of its proper divisors (1).

315120451 is an equidigital number, since it uses as much as digits as its factorization.

315120451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 315120451 is about 17751.6323474772. The cubic root of 315120451 is about 680.4959264376.

Adding to 315120451 its reverse (154021513), we get a palindrome (469141964).

The spelling of 315120451 in words is "three hundred fifteen million, one hundred twenty thousand, four hundred fifty-one".