231432226 has 16 divisors (see below), whose sum is σ = 351216000. Its totient is φ = 114365520.

The previous prime is 231432197. The next prime is 231432247. The reversal of 231432226 is 622234132.

It is a self number, because there is not a number n which added to its sum of digits gives 231432226.

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, 114775 + ... + 116773.

It is an arithmetic number, because the mean of its divisors is an integer number (21951000).

Almost surely, 2^231432226 is an apocalyptic number.

231432226 is a deficient number, since it is larger than the sum of its proper divisors (119783774).

231432226 is a wasteful number, since it uses less digits than its factorization.

231432226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649.

The product of its digits is 3456, while the sum is 25.

The square root of 231432226 is about 15212.8966998399. The cubic root of 231432226 is about 613.9616965853.

Adding to 231432226 its reverse (622234132), we get a palindrome (853666358).

The spelling of 231432226 in words is "two hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty-six".