316563332021 has 16 divisors (see below), whose sum is σ = 329473039104. Its totient is φ = 303913531584.

The previous prime is 316563331993. The next prime is 316563332053. The reversal of 316563332021 is 120233365613.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316563332021 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 (316563332321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13631606 + ... + 13654808.

It is an arithmetic number, because the mean of its divisors is an integer number (20592064944).

Almost surely, 2^316563332021 is an apocalyptic number.

It is an amenable number.

316563332021 is a deficient number, since it is larger than the sum of its proper divisors (12909707083).

316563332021 is a wasteful number, since it uses less digits than its factorization.

316563332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28780.

The product of its (nonzero) digits is 58320, while the sum is 35.

Adding to 316563332021 its reverse (120233365613), we get a palindrome (436796697634).

The spelling of 316563332021 in words is "three hundred sixteen billion, five hundred sixty-three million, three hundred thirty-two thousand, twenty-one".