23691011 has 2 divisors, whose sum is σ = 23691012. Its totient is φ = 23691010.

The previous prime is 23691007. The next prime is 23691029. The reversal of 23691011 is 11019632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23691011 - 2² = 23691007 is a prime.

It is a super-2 number, since 2×23691011² = 1122528004404242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23691611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11845505 + 11845506.

It is an arithmetic number, because the mean of its divisors is an integer number (11845506).

Almost surely, 2^23691011 is an apocalyptic number.

23691011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23691011 is an equidigital number, since it uses as much as digits as its factorization.

23691011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 23691011 is about 4867.3412660302. The cubic root of 23691011 is about 287.2066765142.

The spelling of 23691011 in words is "twenty-three million, six hundred ninety-one thousand, eleven".