231780834 has 12 divisors (see below), whose sum is σ = 502191846. Its totient is φ = 77260272.

The previous prime is 231780833. The next prime is 231780853. The reversal of 231780834 is 438087132.

231780834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 229068225 + 2712609 = 15135^2 + 1647^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231780833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6438339 + ... + 6438374.

Almost surely, 2^231780834 is an apocalyptic number.

231780834 is an abundant number, since it is smaller than the sum of its proper divisors (270411012).

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

231780834 is a wasteful number, since it uses less digits than its factorization.

231780834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12876721 (or 12876718 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 231780834 is about 15224.3500353874. The cubic root of 231780834 is about 614.2698135471.

The spelling of 231780834 in words is "two hundred thirty-one million, seven hundred eighty thousand, eight hundred thirty-four".