23711491 has 2 divisors, whose sum is σ = 23711492. Its totient is φ = 23711490.

The previous prime is 23711461. The next prime is 23711509. The reversal of 23711491 is 19411732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23711491 - 2¹³ = 23703299 is a prime.

It is not a weakly prime, because it can be changed into another prime (23711461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11855745 + 11855746.

It is an arithmetic number, because the mean of its divisors is an integer number (11855746).

Almost surely, 2^23711491 is an apocalyptic number.

23711491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23711491 is an equidigital number, since it uses as much as digits as its factorization.

23711491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 23711491 is about 4869.4446295240. Note that the first 3 decimals coincide. The cubic root of 23711491 is about 287.2894125166.

The spelling of 23711491 in words is "twenty-three million, seven hundred eleven thousand, four hundred ninety-one".