23312011 has 2 divisors, whose sum is σ = 23312012. Its totient is φ = 23312010.

The previous prime is 23311991. The next prime is 23312017. The reversal of 23312011 is 11021332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23312011 - 2¹⁷ = 23180939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23311982 and 23312000.

It is not a weakly prime, because it can be changed into another prime (23312017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656005 + 11656006.

It is an arithmetic number, because the mean of its divisors is an integer number (11656006).

Almost surely, 2^23312011 is an apocalyptic number.

23312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23312011 is an equidigital number, since it uses as much as digits as its factorization.

23312011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23312011 is about 4828.2513397710. The cubic root of 23312011 is about 285.6668941991. Note that the first 3 decimals are identical.

Adding to 23312011 its reverse (11021332), we get a palindrome (34333343).

The spelling of 23312011 in words is "twenty-three million, three hundred twelve thousand, eleven".