23001131111 has 24 divisors (see below), whose sum is σ = 27057332736. Its totient is φ = 19493913600.

The previous prime is 23001131107. The next prime is 23001131113. The reversal of 23001131111 is 11113110032.

It is a happy number.

It is not a de Polignac number, because 23001131111 - 2² = 23001131107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001131113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8558810 + ... + 8561496.

It is an arithmetic number, because the mean of its divisors is an integer number (1127388864).

Almost surely, 2^23001131111 is an apocalyptic number.

23001131111 is a deficient number, since it is larger than the sum of its proper divisors (4056201625).

23001131111 is a wasteful number, since it uses less digits than its factorization.

23001131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599 (or 4592 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 23001131111 its reverse (11113110032), we get a palindrome (34114241143).

The spelling of 23001131111 in words is "twenty-three billion, one million, one hundred thirty-one thousand, one hundred eleven".