315453493 has 2 divisors, whose sum is σ = 315453494. Its totient is φ = 315453492.

The previous prime is 315453451. The next prime is 315453511. The reversal of 315453493 is 394354513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315346564 + 106929 = 17758^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 315453493 - 2²⁵ = 281899061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315453443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157726746 + 157726747.

It is an arithmetic number, because the mean of its divisors is an integer number (157726747).

Almost surely, 2^315453493 is an apocalyptic number.

It is an amenable number.

315453493 is a deficient number, since it is larger than the sum of its proper divisors (1).

315453493 is an equidigital number, since it uses as much as digits as its factorization.

315453493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 37.

The square root of 315453493 is about 17761.0104723802. The cubic root of 315453493 is about 680.7355744087.

The spelling of 315453493 in words is "three hundred fifteen million, four hundred fifty-three thousand, four hundred ninety-three".