102313031123 has 4 divisors (see below), whose sum is σ = 102313728288. Its totient is φ = 102312333960.

The previous prime is 102313031099. The next prime is 102313031263. The reversal of 102313031123 is 321130313201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321130313201 = 4441 ⋅72310361.

It is a cyclic number.

It is not a de Polignac number, because 102313031123 - 2⁶ = 102313031059 is a prime.

It is a super-2 number, since 2×102313031123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102313031095 and 102313031104.

It is not an unprimeable number, because it can be changed into a prime (102313030123) 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, 33536 + ... + 453597.

It is an arithmetic number, because the mean of its divisors is an integer number (25578432072).

Almost surely, 2^102313031123 is an apocalyptic number.

102313031123 is a deficient number, since it is larger than the sum of its proper divisors (697165).

102313031123 is an equidigital number, since it uses as much as digits as its factorization.

102313031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697164.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 102313031123 its reverse (321130313201), we get a palindrome (423443344324).

The spelling of 102313031123 in words is "one hundred two billion, three hundred thirteen million, thirty-one thousand, one hundred twenty-three".