230123309 has 4 divisors (see below), whose sum is σ = 247825116. Its totient is φ = 212421504.

The previous prime is 230123281. The next prime is 230123329. The reversal of 230123309 is 903321032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 135606025 + 94517284 = 11645^2 + 9722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230123309 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 (230123329) 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, 8850884 + ... + 8850909.

It is an arithmetic number, because the mean of its divisors is an integer number (61956279).

Almost surely, 2^230123309 is an apocalyptic number.

It is an amenable number.

230123309 is a deficient number, since it is larger than the sum of its proper divisors (17701807).

230123309 is a wasteful number, since it uses less digits than its factorization.

230123309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17701806.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 230123309 is about 15169.8157207001. The cubic root of 230123309 is about 612.8020414508.

The spelling of 230123309 in words is "two hundred thirty million, one hundred twenty-three thousand, three hundred nine".