231009659 has 2 divisors, whose sum is σ = 231009660. Its totient is φ = 231009658.

The previous prime is 231009641. The next prime is 231009689. The reversal of 231009659 is 956900132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231009659 - 2¹⁶ = 230944123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231009689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115504829 + 115504830.

It is an arithmetic number, because the mean of its divisors is an integer number (115504830).

Almost surely, 2^231009659 is an apocalyptic number.

231009659 is a deficient number, since it is larger than the sum of its proper divisors (1).

231009659 is an equidigital number, since it uses as much as digits as its factorization.

231009659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 231009659 is about 15199.0019080201. The cubic root of 231009659 is about 613.5877958844.

The spelling of 231009659 in words is "two hundred thirty-one million, nine thousand, six hundred fifty-nine".