15923 has 2 divisors, whose sum is σ = 15924. Its totient is φ = 15922.

The previous prime is 15919. The next prime is 15937. The reversal of 15923 is 32951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15923 - 2² = 15919 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 15895 and 15904.

It is not a weakly prime, because it can be changed into another prime (15913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7961 + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (7962).

2¹⁵⁹²³ is an apocalyptic number.

15923 is a deficient number, since it is larger than the sum of its proper divisors (1).

15923 is an equidigital number, since it uses as much as digits as its factorization.

15923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 20.

The square root of 15923 is about 126.1863701039. The cubic root of 15923 is about 25.1579335126.

The spelling of 15923 in words is "fifteen thousand, nine hundred twenty-three".