199311023 has 2 divisors, whose sum is σ = 199311024. Its totient is φ = 199311022.

The previous prime is 199311019. The next prime is 199311053. The reversal of 199311023 is 320113991.

It is a weak prime.

It is an emirp because it is prime and its reverse (320113991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199311023 - 2² = 199311019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199311053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99655511 + 99655512.

It is an arithmetic number, because the mean of its divisors is an integer number (99655512).

Almost surely, 2^199311023 is an apocalyptic number.

199311023 is a deficient number, since it is larger than the sum of its proper divisors (1).

199311023 is an equidigital number, since it uses as much as digits as its factorization.

199311023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 199311023 is about 14117.7555935779. The cubic root of 199311023 is about 584.1312480626.

The spelling of 199311023 in words is "one hundred ninety-nine million, three hundred eleven thousand, twenty-three".