23031321211 has 2 divisors, whose sum is σ = 23031321212. Its totient is φ = 23031321210.

The previous prime is 23031321179. The next prime is 23031321227. The reversal of 23031321211 is 11212313032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23031321211 - 2⁵ = 23031321179 is a prime.

It is not a weakly prime, because it can be changed into another prime (23031321241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515660605 + 11515660606.

It is an arithmetic number, because the mean of its divisors is an integer number (11515660606).

Almost surely, 2^23031321211 is an apocalyptic number.

23031321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031321211 is an equidigital number, since it uses as much as digits as its factorization.

23031321211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23031321211 its reverse (11212313032), we get a palindrome (34243634243).

The spelling of 23031321211 in words is "twenty-three billion, thirty-one million, three hundred twenty-one thousand, two hundred eleven".