231822628 has 24 divisors (see below), whose sum is σ = 412261304. Its totient is φ = 114048000.

The previous prime is 231822611. The next prime is 231822641. The reversal of 231822628 is 826228132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 227949604 = 1968^2 + 15098^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231822593 and 231822602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68578 + ... + 71878.

Almost surely, 2^231822628 is an apocalyptic number.

It is an amenable number.

231822628 is a deficient number, since it is larger than the sum of its proper divisors (180438676).

231822628 is a wasteful number, since it uses less digits than its factorization.

231822628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583 (or 3581 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 231822628 is about 15225.7225772703. The cubic root of 231822628 is about 614.3067324030.

The spelling of 231822628 in words is "two hundred thirty-one million, eight hundred twenty-two thousand, six hundred twenty-eight".