316147397 has 4 divisors (see below), whose sum is σ = 329892960. Its totient is φ = 302401836.

The previous prime is 316147369. The next prime is 316147399. The reversal of 316147397 is 793741613.

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, and also an emirpimes, since its reverse is a distinct semiprime: 793741613 = 7 ⋅113391659.

It is a cyclic number.

It is not a de Polignac number, because 316147397 - 2²⁰ = 315098821 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 (316147399) 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, 6872747 + ... + 6872792.

It is an arithmetic number, because the mean of its divisors is an integer number (82473240).

Almost surely, 2^316147397 is an apocalyptic number.

It is an amenable number.

316147397 is a deficient number, since it is larger than the sum of its proper divisors (13745563).

316147397 is a wasteful number, since it uses less digits than its factorization.

316147397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745562.

The product of its digits is 95256, while the sum is 41.

The square root of 316147397 is about 17780.5342158215. The cubic root of 316147397 is about 681.2343475684.

The spelling of 316147397 in words is "three hundred sixteen million, one hundred forty-seven thousand, three hundred ninety-seven".