102320120031 has 4 divisors (see below), whose sum is σ = 136426826712. Its totient is φ = 68213413352.

The previous prime is 102320119999. The next prime is 102320120053. The reversal of 102320120031 is 130021023201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130021023201 = 3 ⋅43340341067.

It is a cyclic number.

It is not a de Polignac number, because 102320120031 - 2⁵ = 102320119999 is a prime.

It is a super-2 number, since 2×102320120031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320020031) 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 in 3 ways as a sum of consecutive naturals, for example, 17053353336 + ... + 17053353341.

It is an arithmetic number, because the mean of its divisors is an integer number (34106706678).

Almost surely, 2^102320120031 is an apocalyptic number.

102320120031 is a deficient number, since it is larger than the sum of its proper divisors (34106706681).

102320120031 is an equidigital number, since it uses as much as digits as its factorization.

102320120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34106706680.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 102320120031 its reverse (130021023201), we get a palindrome (232341143232).

The spelling of 102320120031 in words is "one hundred two billion, three hundred twenty million, one hundred twenty thousand, thirty-one".