231191463659 has 4 divisors (see below), whose sum is σ = 248975422416. Its totient is φ = 213407504904.

The previous prime is 231191463631. The next prime is 231191463689. The reversal of 231191463659 is 956364191132.

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

It is a cyclic number.

It is not a de Polignac number, because 231191463659 - 2⁸ = 231191463403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231191463689) 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, 8891979359 + ... + 8891979384.

It is an arithmetic number, because the mean of its divisors is an integer number (62243855604).

Almost surely, 2^231191463659 is an apocalyptic number.

231191463659 is a deficient number, since it is larger than the sum of its proper divisors (17783958757).

231191463659 is a wasteful number, since it uses less digits than its factorization.

231191463659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17783958756.

The product of its digits is 1049760, while the sum is 50.

The spelling of 231191463659 in words is "two hundred thirty-one billion, one hundred ninety-one million, four hundred sixty-three thousand, six hundred fifty-nine".