231226688 has 84 divisors (see below), whose sum is σ = 582363072. Its totient is φ = 90074880.

The previous prime is 231226687. The next prime is 231226691. The reversal of 231226688 is 886622132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231226687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31145 + ... + 37847.

Almost surely, 2^231226688 is an apocalyptic number.

231226688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231226688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291181536).

231226688 is an abundant number, since it is smaller than the sum of its proper divisors (351136384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231226688 is a wasteful number, since it uses less digits than its factorization.

231226688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740 (or 6723 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 231226688 is about 15206.1398125889. The cubic root of 231226688 is about 613.7798869362.

The spelling of 231226688 in words is "two hundred thirty-one million, two hundred twenty-six thousand, six hundred eighty-eight".