23120400011 has 6 divisors (see below), whose sum is σ = 23505640236. Its totient is φ = 22741373400.

The previous prime is 23120400001. The next prime is 23120400013. The reversal of 23120400011 is 11000402132.

It is a de Polignac number, because none of the positive numbers 2^k-23120400011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23120400013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3103025 + ... + 3110466.

It is an arithmetic number, because the mean of its divisors is an integer number (3917606706).

Almost surely, 2^23120400011 is an apocalyptic number.

23120400011 is a deficient number, since it is larger than the sum of its proper divisors (385240225).

23120400011 is an frugal number, since it uses more digits than its factorization.

23120400011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213613 (or 6213552 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 23120400011 its reverse (11000402132), we get a palindrome (34120802143).

The spelling of 23120400011 in words is "twenty-three billion, one hundred twenty million, four hundred thousand, eleven".