231797985 has 8 divisors (see below), whose sum is σ = 370876800. Its totient is φ = 123625584.

The previous prime is 231797971. The next prime is 231797999. The reversal of 231797985 is 589797132.

It is an interprime number because it is at equal distance from previous prime (231797971) and next prime (231797999).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231797985 - 2⁷ = 231797857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7726585 + ... + 7726614.

It is an arithmetic number, because the mean of its divisors is an integer number (46359600).

Almost surely, 2^231797985 is an apocalyptic number.

It is an amenable number.

231797985 is a deficient number, since it is larger than the sum of its proper divisors (139078815).

231797985 is a wasteful number, since it uses less digits than its factorization.

231797985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15453207.

The product of its digits is 952560, while the sum is 51.

The square root of 231797985 is about 15224.9133002458. The cubic root of 231797985 is about 614.2849644715.

It can be divided in two parts, 231 and 797985, that added together give a triangular number (798216 = T₁₂₆₃).

The spelling of 231797985 in words is "two hundred thirty-one million, seven hundred ninety-seven thousand, nine hundred eighty-five".