231307738 has 16 divisors (see below), whose sum is σ = 349920000. Its totient is φ = 114671872.

The previous prime is 231307717. The next prime is 231307753. The reversal of 231307738 is 837703132.

231307738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160023 + ... + 161461.

It is an arithmetic number, because the mean of its divisors is an integer number (21870000).

Almost surely, 2^231307738 is an apocalyptic number.

231307738 is a deficient number, since it is larger than the sum of its proper divisors (118612262).

231307738 is a wasteful number, since it uses less digits than its factorization.

231307738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 231307738 is about 15208.8046210082. The cubic root of 231307738 is about 613.8515929735.

The spelling of 231307738 in words is "two hundred thirty-one million, three hundred seven thousand, seven hundred thirty-eight".