231143770 has 32 divisors (see below), whose sum is σ = 488799360. Its totient is φ = 77586240.

The previous prime is 231143749. The next prime is 231143819. The reversal of 231143770 is 77341132.

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 15 ways as a sum of consecutive naturals, for example, 79390 + ... + 82249.

It is an arithmetic number, because the mean of its divisors is an integer number (15274980).

Almost surely, 2^231143770 is an apocalyptic number.

231143770 is an abundant number, since it is smaller than the sum of its proper divisors (257655590).

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

231143770 is a wasteful number, since it uses less digits than its factorization.

231143770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161670.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 231143770 is about 15203.4131036422. The cubic root of 231143770 is about 613.7065109117.

The spelling of 231143770 in words is "two hundred thirty-one million, one hundred forty-three thousand, seven hundred seventy".