102321312131 has 2 divisors, whose sum is σ = 102321312132. Its totient is φ = 102321312130.

The previous prime is 102321312073. The next prime is 102321312139. The reversal of 102321312131 is 131213123201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102321312131 - 2¹⁰ = 102321311107 is a prime.

It is a super-2 number, since 2×102321312131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102321312139) 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, 51160656065 + 51160656066.

It is an arithmetic number, because the mean of its divisors is an integer number (51160656066).

Almost surely, 2^102321312131 is an apocalyptic number.

102321312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102321312131 is an equidigital number, since it uses as much as digits as its factorization.

102321312131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 102321312131 its reverse (131213123201), we get a palindrome (233534435332).

The spelling of 102321312131 in words is "one hundred two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred thirty-one".