315157349 has 4 divisors (see below), whose sum is σ = 339400236. Its totient is φ = 290914464.

The previous prime is 315157343. The next prime is 315157361. The reversal of 315157349 is 943751513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943751513 = 283 ⋅3334811.

It can be written as a sum of positive squares in 2 ways, for example, as 115132900 + 200024449 = 10730^2 + 14143^2 .

It is a cyclic number.

It is not a de Polignac number, because 315157349 - 2⁴ = 315157333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315157343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12121424 + ... + 12121449.

It is an arithmetic number, because the mean of its divisors is an integer number (84850059).

Almost surely, 2^315157349 is an apocalyptic number.

It is an amenable number.

315157349 is a deficient number, since it is larger than the sum of its proper divisors (24242887).

315157349 is a wasteful number, since it uses less digits than its factorization.

315157349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24242886.

The product of its digits is 56700, while the sum is 38.

The square root of 315157349 is about 17752.6716017618. The cubic root of 315157349 is about 680.5224855503.

The spelling of 315157349 in words is "three hundred fifteen million, one hundred fifty-seven thousand, three hundred forty-nine".