316268021 has 4 divisors (see below), whose sum is σ = 316332000. Its totient is φ = 316204044.

The previous prime is 316268011. The next prime is 316268039. The reversal of 316268021 is 120862613.

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 316268021 - 2⁶ = 316267957 is a prime.

It is a super-2 number, since 2×316268021² = 200050922214512882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316268011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23891 + ... + 34688.

It is an arithmetic number, because the mean of its divisors is an integer number (79083000).

Almost surely, 2^316268021 is an apocalyptic number.

It is an amenable number.

316268021 is a deficient number, since it is larger than the sum of its proper divisors (63979).

316268021 is an equidigital number, since it uses as much as digits as its factorization.

316268021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63978.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 316268021 is about 17783.9259163999. The cubic root of 316268021 is about 681.3209767421.

The spelling of 316268021 in words is "three hundred sixteen million, two hundred sixty-eight thousand, twenty-one".