231641807 has 8 divisors (see below), whose sum is σ = 233766000. Its totient is φ = 229525504.

The previous prime is 231641789. The next prime is 231641849. The reversal of 231641807 is 708146132.

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

It is a cyclic number.

It is not a de Polignac number, because 231641807 - 2⁶ = 231641743 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 (231640807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67919 + ... + 71247.

It is an arithmetic number, because the mean of its divisors is an integer number (29220750).

Almost surely, 2^231641807 is an apocalyptic number.

231641807 is a deficient number, since it is larger than the sum of its proper divisors (2124193).

231641807 is a wasteful number, since it uses less digits than its factorization.

231641807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 231641807 is about 15219.7834084457. The cubic root of 231641807 is about 614.1469716817.

Adding to 231641807 its reverse (708146132), we get a palindrome (939787939).

The spelling of 231641807 in words is "two hundred thirty-one million, six hundred forty-one thousand, eight hundred seven".