23101231213 has 4 divisors (see below), whose sum is σ = 23101535488. Its totient is φ = 23100926940.

The previous prime is 23101231193. The next prime is 23101231253. The reversal of 23101231213 is 31213210132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23101231213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23101231253) 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, 66070 + ... + 224872.

It is an arithmetic number, because the mean of its divisors is an integer number (5775383872).

Almost surely, 2^23101231213 is an apocalyptic number.

It is an amenable number.

23101231213 is a deficient number, since it is larger than the sum of its proper divisors (304275).

23101231213 is a wasteful number, since it uses less digits than its factorization.

23101231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304274.

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

Adding to 23101231213 its reverse (31213210132), we get a palindrome (54314441345).

The spelling of 23101231213 in words is "twenty-three billion, one hundred one million, two hundred thirty-one thousand, two hundred thirteen".