23331312012011 has 2 divisors, whose sum is σ = 23331312012012. Its totient is φ = 23331312012010.

The previous prime is 23331312011993. The next prime is 23331312012013. The reversal of 23331312012011 is 11021021313332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23331312012011 - 2³⁰ = 23330238270187 is a prime.

Together with 23331312012013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23331312012013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665656006005 + 11665656006006.

It is an arithmetic number, because the mean of its divisors is an integer number (11665656006006).

Almost surely, 2^{23331312012011} is an apocalyptic number.

23331312012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23331312012011 is an equidigital number, since it uses as much as digits as its factorization.

23331312012011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 23331312012011 its reverse (11021021313332), we get a palindrome (34352333325343).

The spelling of 23331312012011 in words is "twenty-three trillion, three hundred thirty-one billion, three hundred twelve million, twelve thousand, eleven".