231897206 has 8 divisors (see below), whose sum is σ = 347919624. Its totient is φ = 115924000.

The previous prime is 231897179. The next prime is 231897227. The reversal of 231897206 is 602798132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 231897206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581 + ... + 21831.

It is an arithmetic number, because the mean of its divisors is an integer number (43489953).

Almost surely, 2^231897206 is an apocalyptic number.

231897206 is a deficient number, since it is larger than the sum of its proper divisors (116022418).

231897206 is a wasteful number, since it uses less digits than its factorization.

231897206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 231897206 is about 15228.1714595023. The cubic root of 231897206 is about 614.3726000823.

The spelling of 231897206 in words is "two hundred thirty-one million, eight hundred ninety-seven thousand, two hundred six".