23213112311 has 16 divisors (see below), whose sum is σ = 23926425600. Its totient is φ = 22507243200.

The previous prime is 23213112301. The next prime is 23213112317. The reversal of 23213112311 is 11321131232.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23213112311 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 (23213112317) 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, 4875350 + ... + 4880108.

It is an arithmetic number, because the mean of its divisors is an integer number (1495401600).

Almost surely, 2^23213112311 is an apocalyptic number.

23213112311 is a deficient number, since it is larger than the sum of its proper divisors (713313289).

23213112311 is a wasteful number, since it uses less digits than its factorization.

23213112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510.

The product of its digits is 216, while the sum is 20.

Adding to 23213112311 its reverse (11321131232), we get a palindrome (34534243543).

It can be divided in two parts, 232131 and 12311, that added together give a palindrome (244442).

The spelling of 23213112311 in words is "twenty-three billion, two hundred thirteen million, one hundred twelve thousand, three hundred eleven".