232278191 has 4 divisors (see below), whose sum is σ = 245941632. Its totient is φ = 218614752.

The previous prime is 232278149. The next prime is 232278199. The reversal of 232278191 is 191872232.

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 232278191 - 2²² = 228083887 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 (232278199) 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, 6831695 + ... + 6831728.

It is an arithmetic number, because the mean of its divisors is an integer number (61485408).

Almost surely, 2^232278191 is an apocalyptic number.

232278191 is a deficient number, since it is larger than the sum of its proper divisors (13663441).

232278191 is a wasteful number, since it uses less digits than its factorization.

232278191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13663440.

The product of its digits is 12096, while the sum is 35.

The square root of 232278191 is about 15240.6755427704. The cubic root of 232278191 is about 614.7088678664.

The spelling of 232278191 in words is "two hundred thirty-two million, two hundred seventy-eight thousand, one hundred ninety-one".