232143665 has 8 divisors (see below), whose sum is σ = 300001128. Its totient is φ = 171429120.

The previous prime is 232143631. The next prime is 232143671. The reversal of 232143665 is 566341232.

It can be written as a sum of positive squares in 4 ways, for example, as 10491121 + 221652544 = 3239^2 + 14888^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 232143665 - 2¹² = 232139569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785656 + ... + 1785785.

It is an arithmetic number, because the mean of its divisors is an integer number (37500141).

Almost surely, 2^232143665 is an apocalyptic number.

It is an amenable number.

232143665 is a deficient number, since it is larger than the sum of its proper divisors (67857463).

232143665 is a wasteful number, since it uses less digits than its factorization.

232143665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571459.

The product of its digits is 25920, while the sum is 32.

The square root of 232143665 is about 15236.2615165269. The cubic root of 232143665 is about 614.5901735624.

Adding to 232143665 its reverse (566341232), we get a palindrome (798484897).

The spelling of 232143665 in words is "two hundred thirty-two million, one hundred forty-three thousand, six hundred sixty-five".