230129999 has 4 divisors (see below), whose sum is σ = 251050920. Its totient is φ = 209209080.

The previous prime is 230129989. The next prime is 230130013. The reversal of 230129999 is 999921032.

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-230129999 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 (230129909) 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, 10460444 + ... + 10460465.

It is an arithmetic number, because the mean of its divisors is an integer number (62762730).

Almost surely, 2^230129999 is an apocalyptic number.

230129999 is a deficient number, since it is larger than the sum of its proper divisors (20920921).

230129999 is a wasteful number, since it uses less digits than its factorization.

230129999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20920920.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 230129999 is about 15170.0362227649. The cubic root of 230129999 is about 612.8079797250.

The spelling of 230129999 in words is "two hundred thirty million, one hundred twenty-nine thousand, nine hundred ninety-nine".