201230999 has 4 divisors (see below), whose sum is σ = 201378936. Its totient is φ = 201083064.

The previous prime is 201230987. The next prime is 201231001. The reversal of 201230999 is 999032102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201230999 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 (201230929) 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, 71909 + ... + 74654.

It is an arithmetic number, because the mean of its divisors is an integer number (50344734).

Almost surely, 2^201230999 is an apocalyptic number.

201230999 is a deficient number, since it is larger than the sum of its proper divisors (147937).

201230999 is a wasteful number, since it uses less digits than its factorization.

201230999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147936.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 201230999 is about 14185.5912460496. The cubic root of 201230999 is about 586.0009153655. Note that the first 3 decimals are identical.

The spelling of 201230999 in words is "two hundred one million, two hundred thirty thousand, nine hundred ninety-nine".