231671306 has 4 divisors (see below), whose sum is σ = 347506962. Its totient is φ = 115835652.

The previous prime is 231671303. The next prime is 231671317. The reversal of 231671306 is 603176132.

231671306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 219484225 + 12187081 = 14815^2 + 3491^2 .

It is not an unprimeable number, because it can be changed into a prime (231671303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57917825 + ... + 57917828.

Almost surely, 2^231671306 is an apocalyptic number.

231671306 is a deficient number, since it is larger than the sum of its proper divisors (115835656).

231671306 is a wasteful number, since it uses less digits than its factorization.

231671306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115835655.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 231671306 is about 15220.7524781136. The cubic root of 231671306 is about 614.1730405979.

The spelling of 231671306 in words is "two hundred thirty-one million, six hundred seventy-one thousand, three hundred six".