231057388 has 6 divisors (see below), whose sum is σ = 404350436. Its totient is φ = 115528692.

The previous prime is 231057377. The next prime is 231057391. The reversal of 231057388 is 883750132.

231057388 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 as a sum of consecutive naturals, namely, 28882170 + ... + 28882177.

Almost surely, 2^231057388 is an apocalyptic number.

It is an amenable number.

231057388 is a deficient number, since it is larger than the sum of its proper divisors (173293048).

231057388 is a wasteful number, since it uses less digits than its factorization.

231057388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57764351 (or 57764349 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 231057388 is about 15200.5719629230. The cubic root of 231057388 is about 613.6300508495.

The spelling of 231057388 in words is "two hundred thirty-one million, fifty-seven thousand, three hundred eighty-eight".