315241447 has 2 divisors, whose sum is σ = 315241448. Its totient is φ = 315241446.

The previous prime is 315241429. The next prime is 315241453. The reversal of 315241447 is 744142513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315241447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315241417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157620723 + 157620724.

It is an arithmetic number, because the mean of its divisors is an integer number (157620724).

Almost surely, 2^315241447 is an apocalyptic number.

315241447 is a deficient number, since it is larger than the sum of its proper divisors (1).

315241447 is an equidigital number, since it uses as much as digits as its factorization.

315241447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 315241447 is about 17755.0400450126. The cubic root of 315241447 is about 680.5830113907.

The spelling of 315241447 in words is "three hundred fifteen million, two hundred forty-one thousand, four hundred forty-seven".