316640823 has 8 divisors (see below), whose sum is σ = 423955200. Its totient is φ = 210210168.

The previous prime is 316640801. The next prime is 316640837. The reversal of 316640823 is 328046613.

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

It is not a de Polignac number, because 316640823 - 2¹⁷ = 316509751 is a prime.

It is a super-2 number, since 2×316640823² = 200522821580234658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316640843) 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, 220093 + ... + 221526.

It is an arithmetic number, because the mean of its divisors is an integer number (52994400).

Almost surely, 2^316640823 is an apocalyptic number.

316640823 is a deficient number, since it is larger than the sum of its proper divisors (107314377).

316640823 is a wasteful number, since it uses less digits than its factorization.

316640823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441861.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 316640823 is about 17794.4042608906. The cubic root of 316640823 is about 681.5885747612.

The spelling of 316640823 in words is "three hundred sixteen million, six hundred forty thousand, eight hundred twenty-three".