231789384 has 32 divisors (see below), whose sum is σ = 643860000. Its totient is φ = 77263056.

The previous prime is 231789361. The next prime is 231789403. The reversal of 231789384 is 483987132.

Added to its reverse (483987132) it gives a square (715776516 = 26754²).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 536334 + ... + 536765.

It is an arithmetic number, because the mean of its divisors is an integer number (20120625).

Almost surely, 2^231789384 is an apocalyptic number.

231789384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231789384 is an abundant number, since it is smaller than the sum of its proper divisors (412070616).

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

231789384 is a wasteful number, since it uses less digits than its factorization.

231789384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073114 (or 1073104 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 231789384 is about 15224.6308329627. The cubic root of 231789384 is about 614.2773665764.

Adding to 231789384 its reverse (483987132), we get a square (715776516 = 26754²).

The spelling of 231789384 in words is "two hundred thirty-one million, seven hundred eighty-nine thousand, three hundred eighty-four".