102321312113 has 4 divisors (see below), whose sum is σ = 102444740340. Its totient is φ = 102197883888.

The previous prime is 102321312073. The next prime is 102321312131. The reversal of 102321312113 is 311213123201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24330696289 + 77990615824 = 155983^2 + 279268^2 .

It is a cyclic number.

It is not a de Polignac number, because 102321312113 - 2²² = 102317117809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102321312143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61712870 + ... + 61714527.

It is an arithmetic number, because the mean of its divisors is an integer number (25611185085).

Almost surely, 2^102321312113 is an apocalyptic number.

It is an amenable number.

102321312113 is a deficient number, since it is larger than the sum of its proper divisors (123428227).

102321312113 is an equidigital number, since it uses as much as digits as its factorization.

102321312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123428226.

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

Adding to 102321312113 its reverse (311213123201), we get a palindrome (413534435314).

The spelling of 102321312113 in words is "one hundred two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred thirteen".