231232686 has 16 divisors (see below), whose sum is σ = 462874368. Its totient is φ = 77009400.

The previous prime is 231232681. The next prime is 231232697. The reversal of 231232686 is 686232132.

It is a happy number.

231232686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231232681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9430 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (28929648).

Almost surely, 2^231232686 is an apocalyptic number.

231232686 is an abundant number, since it is smaller than the sum of its proper divisors (231641682).

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

231232686 is a wasteful number, since it uses less digits than its factorization.

231232686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34087.

The product of its digits is 20736, while the sum is 33.

The square root of 231232686 is about 15206.3370342762. The cubic root of 231232686 is about 613.7851940225.

The spelling of 231232686 in words is "two hundred thirty-one million, two hundred thirty-two thousand, six hundred eighty-six".