23202110111231 has 4 divisors (see below), whose sum is σ = 24566940117792. Its totient is φ = 21837280104672.

The previous prime is 23202110111209. The next prime is 23202110111237. The reversal of 23202110111231 is 13211101120232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23202110111231 is a prime.

It is a super-2 number, since 2×23202110111231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23202110111237) 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, 682415003255 + ... + 682415003288.

It is an arithmetic number, because the mean of its divisors is an integer number (6141735029448).

Almost surely, 2^{23202110111231} is an apocalyptic number.

23202110111231 is a deficient number, since it is larger than the sum of its proper divisors (1364830006561).

23202110111231 is a wasteful number, since it uses less digits than its factorization.

23202110111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364830006560.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 23202110111231 its reverse (13211101120232), we get a palindrome (36413211231463).

The spelling of 23202110111231 in words is "twenty-three trillion, two hundred two billion, one hundred ten million, one hundred eleven thousand, two hundred thirty-one".