316220893 has 4 divisors (see below), whose sum is σ = 334822140. Its totient is φ = 297619648.

The previous prime is 316220869. The next prime is 316220897. The reversal of 316220893 is 398022613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 398022613 = 23 ⋅17305331.

It can be written as a sum of positive squares in 2 ways, for example, as 220611609 + 95609284 = 14853^2 + 9778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316220893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316220897) 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, 9300598 + ... + 9300631.

It is an arithmetic number, because the mean of its divisors is an integer number (83705535).

Almost surely, 2^316220893 is an apocalyptic number.

It is an amenable number.

316220893 is a deficient number, since it is larger than the sum of its proper divisors (18601247).

316220893 is a wasteful number, since it uses less digits than its factorization.

316220893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18601246.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 316220893 is about 17782.6008502693. The cubic root of 316220893 is about 681.2871332002.

The spelling of 316220893 in words is "three hundred sixteen million, two hundred twenty thousand, eight hundred ninety-three".