230581992509 has 4 divisors (see below), whose sum is σ = 251543991840. Its totient is φ = 209619993180.

The previous prime is 230581992503. The next prime is 230581992547. The reversal of 230581992509 is 905299185032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230581992509 - 2⁴ = 230581992493 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 (230581992503) 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, 10480999649 + ... + 10480999670.

It is an arithmetic number, because the mean of its divisors is an integer number (62885997960).

Almost surely, 2^230581992509 is an apocalyptic number.

It is an amenable number.

230581992509 is a deficient number, since it is larger than the sum of its proper divisors (20961999331).

230581992509 is a wasteful number, since it uses less digits than its factorization.

230581992509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20961999330.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 230581992509 in words is "two hundred thirty billion, five hundred eighty-one million, nine hundred ninety-two thousand, five hundred nine".