316020221303131 has 2 divisors, whose sum is σ = 316020221303132. Its totient is φ = 316020221303130.

The previous prime is 316020221303123. The next prime is 316020221303141. The reversal of 316020221303131 is 131303122020613.

It is a weak prime.

It is an emirp because it is prime and its reverse (131303122020613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316020221303131 - 2³ = 316020221303123 is a prime.

It is a super-2 number, since 2×316020221303131² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 316020221303131.

It is not a weakly prime, because it can be changed into another prime (316020221303141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158010110651565 + 158010110651566.

It is an arithmetic number, because the mean of its divisors is an integer number (158010110651566).

Almost surely, 2^{316020221303131} is an apocalyptic number.

316020221303131 is a deficient number, since it is larger than the sum of its proper divisors (1).

316020221303131 is an equidigital number, since it uses as much as digits as its factorization.

316020221303131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 316020221303131 its reverse (131303122020613), we get a palindrome (447323343323744).

The spelling of 316020221303131 in words is "three hundred sixteen trillion, twenty billion, two hundred twenty-one million, three hundred three thousand, one hundred thirty-one".