23111320001 has 24 divisors (see below), whose sum is σ = 29842048704. Its totient is φ = 17387778240.

The previous prime is 23111319991. The next prime is 23111320003. The reversal of 23111320001 is 10002311132.

It is not a de Polignac number, because 23111320001 - 2³⁴ = 5931450817 is a prime.

It is a super-2 number, since 2×23111320001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23111320003) 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, 113690 + ... + 243203.

It is an arithmetic number, because the mean of its divisors is an integer number (1243418696).

Almost surely, 2^23111320001 is an apocalyptic number.

It is an amenable number.

23111320001 is a deficient number, since it is larger than the sum of its proper divisors (6730728703).

23111320001 is a wasteful number, since it uses less digits than its factorization.

23111320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356969 (or 356940 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23111320001 its reverse (10002311132), we get a palindrome (33113631133).

The spelling of 23111320001 in words is "twenty-three billion, one hundred eleven million, three hundred twenty thousand, one".