231071444 has 12 divisors (see below), whose sum is σ = 405652884. Its totient is φ = 115170624.

The previous prime is 231071413. The next prime is 231071453. The reversal of 231071444 is 444170132.

It can be written as a sum of positive squares in 2 ways, for example, as 84419344 + 146652100 = 9188^2 + 12110^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 89849 + ... + 92384.

It is an arithmetic number, because the mean of its divisors is an integer number (33804407).

Almost surely, 2^231071444 is an apocalyptic number.

It is an amenable number.

231071444 is a deficient number, since it is larger than the sum of its proper divisors (174581440).

231071444 is a wasteful number, since it uses less digits than its factorization.

231071444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182554 (or 182552 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 231071444 is about 15201.0343069148. The cubic root of 231071444 is about 613.6424936588.

The spelling of 231071444 in words is "two hundred thirty-one million, seventy-one thousand, four hundred forty-four".