102121031323 has 4 divisors (see below), whose sum is σ = 102138094440. Its totient is φ = 102103968208.

The previous prime is 102121031179. The next prime is 102121031359. The reversal of 102121031323 is 323130121201.

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

It is a cyclic number.

It is not a de Polignac number, because 102121031323 - 2²⁵ = 102087476891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102121031323.

It is not an unprimeable number, because it can be changed into a prime (102121031393) 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, 8522578 + ... + 8534551.

It is an arithmetic number, because the mean of its divisors is an integer number (25534523610).

Almost surely, 2^102121031323 is an apocalyptic number.

102121031323 is a deficient number, since it is larger than the sum of its proper divisors (17063117).

102121031323 is an equidigital number, since it uses as much as digits as its factorization.

102121031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17063116.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102121031323 its reverse (323130121201), we get a palindrome (425251152524).

The spelling of 102121031323 in words is "one hundred two billion, one hundred twenty-one million, thirty-one thousand, three hundred twenty-three".