231122788 has 12 divisors (see below), whose sum is σ = 435577660. Its totient is φ = 106672032.

The previous prime is 231122777. The next prime is 231122789. The reversal of 231122788 is 887221132.

It can be written as a sum of positive squares in 2 ways, for example, as 47032164 + 184090624 = 6858^2 + 13568^2 .

It is not an unprimeable number, because it can be changed into a prime (231122789) 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, 2222283 + ... + 2222386.

Almost surely, 2^231122788 is an apocalyptic number.

It is an amenable number.

231122788 is a deficient number, since it is larger than the sum of its proper divisors (204454872).

231122788 is a wasteful number, since it uses less digits than its factorization.

231122788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444686 (or 4444684 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 231122788 is about 15202.7230455600. The cubic root of 231122788 is about 613.6879406807.

The spelling of 231122788 in words is "two hundred thirty-one million, one hundred twenty-two thousand, seven hundred eighty-eight".