230311999 has 4 divisors (see below), whose sum is σ = 235668136. Its totient is φ = 224955864.

The previous prime is 230311931. The next prime is 230312003. The reversal of 230311999 is 999113032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230311999 - 2¹¹ = 230309951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230311919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678004 + ... + 2678089.

It is an arithmetic number, because the mean of its divisors is an integer number (58917034).

Almost surely, 2^230311999 is an apocalyptic number.

230311999 is a deficient number, since it is larger than the sum of its proper divisors (5356137).

230311999 is an equidigital number, since it uses as much as digits as its factorization.

230311999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356136.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 230311999 is about 15176.0337044960. The cubic root of 230311999 is about 612.9694850539.

The spelling of 230311999 in words is "two hundred thirty million, three hundred eleven thousand, nine hundred ninety-nine".