316056021 has 4 divisors (see below), whose sum is σ = 421408032. Its totient is φ = 210704012.

The previous prime is 316056001. The next prime is 316056029. The reversal of 316056021 is 120650613.

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 316056021 - 2⁵ = 316055989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316055982 and 316056000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316056029) 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, 52676001 + ... + 52676006.

It is an arithmetic number, because the mean of its divisors is an integer number (105352008).

Almost surely, 2^316056021 is an apocalyptic number.

It is an amenable number.

316056021 is a deficient number, since it is larger than the sum of its proper divisors (105352011).

316056021 is a wasteful number, since it uses less digits than its factorization.

316056021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105352010.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 316056021 is about 17777.9644785335. The cubic root of 316056021 is about 681.1687089154.

The spelling of 316056021 in words is "three hundred sixteen million, fifty-six thousand, twenty-one".