231606730 has 8 divisors (see below), whose sum is σ = 416892132. Its totient is φ = 92642688.

The previous prime is 231606719. The next prime is 231606737. The reversal of 231606730 is 37606132.

231606730 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 2 ways, for example, as 210511081 + 21095649 = 14509^2 + 4593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (231606737) 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, 11580327 + ... + 11580346.

Almost surely, 2^231606730 is an apocalyptic number.

231606730 is a deficient number, since it is larger than the sum of its proper divisors (185285402).

231606730 is a wasteful number, since it uses less digits than its factorization.

231606730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23160680.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 231606730 is about 15218.6310159620. The cubic root of 231606730 is about 614.1159704834.

It can be divided in two parts, 23160 and 6730, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 231606730 in words is "two hundred thirty-one million, six hundred six thousand, seven hundred thirty".