315453442 has 4 divisors (see below), whose sum is σ = 473180166. Its totient is φ = 157726720.

The previous prime is 315453389. The next prime is 315453443. The reversal of 315453442 is 244354513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 292786321 + 22667121 = 17111^2 + 4761^2 .

It is not an unprimeable number, because it can be changed into a prime (315453443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78863359 + ... + 78863362.

Almost surely, 2^315453442 is an apocalyptic number.

315453442 is a deficient number, since it is larger than the sum of its proper divisors (157726724).

315453442 is a wasteful number, since it uses less digits than its factorization.

315453442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157726723.

The product of its digits is 28800, while the sum is 31.

The square root of 315453442 is about 17761.0090366510. The cubic root of 315453442 is about 680.7355377234.

The spelling of 315453442 in words is "three hundred fifteen million, four hundred fifty-three thousand, four hundred forty-two".