316047573781 has 2 divisors, whose sum is σ = 316047573782. Its totient is φ = 316047573780.

The previous prime is 316047573773. The next prime is 316047573797. The reversal of 316047573781 is 187375740613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310767226225 + 5280347556 = 557465^2 + 72666^2 .

It is a cyclic number.

It is not a de Polignac number, because 316047573781 - 2³ = 316047573773 is a prime.

It is a super-2 number, since 2×316047573781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316047573701) 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 as a sum of consecutive naturals, namely, 158023786890 + 158023786891.

It is an arithmetic number, because the mean of its divisors is an integer number (158023786891).

Almost surely, 2^316047573781 is an apocalyptic number.

It is an amenable number.

316047573781 is a deficient number, since it is larger than the sum of its proper divisors (1).

316047573781 is an equidigital number, since it uses as much as digits as its factorization.

316047573781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 316047573781 in words is "three hundred sixteen billion, forty-seven million, five hundred seventy-three thousand, seven hundred eighty-one".