23719691 has 2 divisors, whose sum is σ = 23719692. Its totient is φ = 23719690.

The previous prime is 23719643. The next prime is 23719697. The reversal of 23719691 is 19691732.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23719691 is a prime.

It is a super-2 number, since 2×23719691² = 1125247482270962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23719697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11859845 + 11859846.

It is an arithmetic number, because the mean of its divisors is an integer number (11859846).

Almost surely, 2^23719691 is an apocalyptic number.

23719691 is a deficient number, since it is larger than the sum of its proper divisors (1).

23719691 is an equidigital number, since it uses as much as digits as its factorization.

23719691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 23719691 is about 4870.2865418782. The cubic root of 23719691 is about 287.3225258803.

The spelling of 23719691 in words is "twenty-three million, seven hundred nineteen thousand, six hundred ninety-one".