23011 has 2 divisors, whose sum is σ = 23012. Its totient is φ = 23010.

The previous prime is 23003. The next prime is 23017. The reversal of 23011 is 11032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23011 - 2³ = 23003 is a prime.

It is a super-2 number, since 2×23011² = 1059012242, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 22985 and 23003.

It is not a weakly prime, because it can be changed into another prime (23017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505 + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (11506).

2²³⁰¹¹ is an apocalyptic number.

23011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011 is an equidigital number, since it uses as much as digits as its factorization.

23011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 23011 is about 151.6937704720. The cubic root of 23011 is about 28.4432027769.

Adding to 23011 its reverse (11032), we get a palindrome (34043).

The spelling of 23011 in words is "twenty-three thousand, eleven", and thus it is an iban number.