102318306263581 has 2 divisors, whose sum is σ = 102318306263582. Its totient is φ = 102318306263580.

The previous prime is 102318306263443. The next prime is 102318306263651. The reversal of 102318306263581 is 185362603813201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65299490256100 + 37018816007481 = 8080810^2 + 6084309^2 .

It is a cyclic number.

It is not a de Polignac number, because 102318306263581 - 2¹⁷ = 102318306132509 is a prime.

It is a super-2 number, since 2×102318306263581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102318306263981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51159153131790 + 51159153131791.

It is an arithmetic number, because the mean of its divisors is an integer number (51159153131791).

Almost surely, 2^{102318306263581} is an apocalyptic number.

It is an amenable number.

102318306263581 is a deficient number, since it is larger than the sum of its proper divisors (1).

102318306263581 is an equidigital number, since it uses as much as digits as its factorization.

102318306263581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 102318306263581 in words is "one hundred two trillion, three hundred eighteen billion, three hundred six million, two hundred sixty-three thousand, five hundred eighty-one".