231072226 has 16 divisors (see below), whose sum is σ = 432135360. Its totient is φ = 90028080.

The previous prime is 231072199. The next prime is 231072251. The reversal of 231072226 is 622270132.

It is a self number, because there is not a number n which added to its sum of digits gives 231072226.

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, 750081 + ... + 750388.

It is an arithmetic number, because the mean of its divisors is an integer number (27008460).

Almost surely, 2^231072226 is an apocalyptic number.

231072226 is a deficient number, since it is larger than the sum of its proper divisors (201063134).

231072226 is a wasteful number, since it uses less digits than its factorization.

231072226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500489.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 231072226 is about 15201.0600288269. The cubic root of 231072226 is about 613.6431858948.

The spelling of 231072226 in words is "two hundred thirty-one million, seventy-two thousand, two hundred twenty-six".