11723519 has 2 divisors, whose sum is σ = 11723520. Its totient is φ = 11723518.

The previous prime is 11723507. The next prime is 11723527. The reversal of 11723519 is 91532711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11723519 - 2⁸ = 11723263 is a prime.

It is a super-2 number, since 2×11723519² = 274881795486722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11723491 and 11723500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11723599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5861759 + 5861760.

It is an arithmetic number, because the mean of its divisors is an integer number (5861760).

Almost surely, 2^11723519 is an apocalyptic number.

11723519 is a deficient number, since it is larger than the sum of its proper divisors (1).

11723519 is an equidigital number, since it uses as much as digits as its factorization.

11723519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 29.

The square root of 11723519 is about 3423.9624705887. The cubic root of 11723519 is about 227.1708818297.

The spelling of 11723519 in words is "eleven million, seven hundred twenty-three thousand, five hundred nineteen".