315213397 has 8 divisors (see below), whose sum is σ = 327833600. Its totient is φ = 302809104.

The previous prime is 315213391. The next prime is 315213421. The reversal of 315213397 is 793312513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315213397 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 (315213391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50997 + ... + 56842.

It is an arithmetic number, because the mean of its divisors is an integer number (40979200).

Almost surely, 2^315213397 is an apocalyptic number.

315213397 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

315213397 is a deficient number, since it is larger than the sum of its proper divisors (12620203).

315213397 is a wasteful number, since it uses less digits than its factorization.

315213397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107955.

The product of its digits is 17010, while the sum is 34.

The square root of 315213397 is about 17754.2501108889. The cubic root of 315213397 is about 680.5628248322.

The spelling of 315213397 in words is "three hundred fifteen million, two hundred thirteen thousand, three hundred ninety-seven".