231282609 has 16 divisors (see below), whose sum is σ = 312903360. Its totient is φ = 151937280.

The previous prime is 231282587. The next prime is 231282643. The reversal of 231282609 is 906282132.

It is a happy number.

It is not a de Polignac number, because 231282609 - 2⁵ = 231282577 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231282609.

It is not an unprimeable number, because it can be changed into a prime (231282409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87069 + ... + 89685.

It is an arithmetic number, because the mean of its divisors is an integer number (19556460).

Almost surely, 2^231282609 is an apocalyptic number.

It is an amenable number.

231282609 is a deficient number, since it is larger than the sum of its proper divisors (81620751).

231282609 is a wasteful number, since it uses less digits than its factorization.

231282609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 231282609 is about 15207.9784652662. The cubic root of 231282609 is about 613.8293627973.

The spelling of 231282609 in words is "two hundred thirty-one million, two hundred eighty-two thousand, six hundred nine".