23311111140 has 36 divisors (see below), whose sum is σ = 70710371004. Its totient is φ = 6216296256.

The previous prime is 23311111129. The next prime is 23311111157. The reversal of 23311111140 is 4111111332.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10919414016 + 12391697124 = 104496^2 + 111318^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64752907 + ... + 64753266.

Almost surely, 2^23311111140 is an apocalyptic number.

23311111140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311111140 is an abundant number, since it is smaller than the sum of its proper divisors (47399259864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23311111140 is a wasteful number, since it uses less digits than its factorization.

23311111140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129506188 (or 129506183 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 23311111140 its reverse (4111111332), we get a palindrome (27422222472).

The spelling of 23311111140 in words is "twenty-three billion, three hundred eleven million, one hundred eleven thousand, one hundred forty".