23123103213 has 16 divisors (see below), whose sum is σ = 35355470976. Its totient is φ = 13168102080.

The previous prime is 23123103209. The next prime is 23123103217. The reversal of 23123103213 is 31230132132.

It is an interprime number because it is at equal distance from previous prime (23123103209) and next prime (23123103217).

It is not a de Polignac number, because 23123103213 - 2² = 23123103209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23123103213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123103217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872858 + ... + 1885163.

It is an arithmetic number, because the mean of its divisors is an integer number (2209716936).

Almost surely, 2^23123103213 is an apocalyptic number.

It is an amenable number.

23123103213 is a deficient number, since it is larger than the sum of its proper divisors (12232367763).

23123103213 is a wasteful number, since it uses less digits than its factorization.

23123103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758324.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23123103213 its reverse (31230132132), we get a palindrome (54353235345).

The spelling of 23123103213 in words is "twenty-three billion, one hundred twenty-three million, one hundred three thousand, two hundred thirteen".