231668338 has 16 divisors (see below), whose sum is σ = 385521120. Its totient is φ = 103518400.

The previous prime is 231668323. The next prime is 231668341. The reversal of 231668338 is 833866132.

It is a self number, because there is not a number n which added to its sum of digits gives 231668338.

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, 87943 + ... + 90538.

It is an arithmetic number, because the mean of its divisors is an integer number (24095070).

Almost surely, 2^231668338 is an apocalyptic number.

231668338 is a deficient number, since it is larger than the sum of its proper divisors (153852782).

231668338 is a wasteful number, since it uses less digits than its factorization.

231668338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178553.

The product of its digits is 124416, while the sum is 40.

The square root of 231668338 is about 15220.6549793365. The cubic root of 231668338 is about 614.1704178110.

The spelling of 231668338 in words is "two hundred thirty-one million, six hundred sixty-eight thousand, three hundred thirty-eight".