23003111311 has 12 divisors (see below), whose sum is σ = 24790046520. Its totient is φ = 21285588240.

The previous prime is 23003111303. The next prime is 23003111323. The reversal of 23003111311 is 11311130032.

It is not a de Polignac number, because 23003111311 - 2³ = 23003111303 is a prime.

It is a super-2 number, since 2×23003111311² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003111711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292260 + ... + 362521.

It is an arithmetic number, because the mean of its divisors is an integer number (2065837210).

Almost surely, 2^23003111311 is an apocalyptic number.

23003111311 is a deficient number, since it is larger than the sum of its proper divisors (1786935209).

23003111311 is an equidigital number, since it uses as much as digits as its factorization.

23003111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654886 (or 654843 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 23003111311 its reverse (11311130032), we get a palindrome (34314241343).

The spelling of 23003111311 in words is "twenty-three billion, three million, one hundred eleven thousand, three hundred eleven".