315274993 has 4 divisors (see below), whose sum is σ = 343936368. Its totient is φ = 286613620.

The previous prime is 315274963. The next prime is 315275021. The reversal of 315274993 is 399472513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315274993 - 2⁹ = 315274481 is a prime.

It is a super-2 number, since 2×315274993² = 198796642422300098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315274903) 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, 14330671 + ... + 14330692.

It is an arithmetic number, because the mean of its divisors is an integer number (85984092).

Almost surely, 2^315274993 is an apocalyptic number.

It is an amenable number.

315274993 is a deficient number, since it is larger than the sum of its proper divisors (28661375).

315274993 is a wasteful number, since it uses less digits than its factorization.

315274993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28661374.

The product of its digits is 204120, while the sum is 43.

The square root of 315274993 is about 17755.9847093874. The cubic root of 315274993 is about 680.6071516469.

The spelling of 315274993 in words is "three hundred fifteen million, two hundred seventy-four thousand, nine hundred ninety-three".