232021663 has 4 divisors (see below), whose sum is σ = 240022440. Its totient is φ = 224020888.

The previous prime is 232021607. The next prime is 232021717. The reversal of 232021663 is 366120232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232021663 - 2²¹ = 229924511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232051663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000345 + ... + 4000402.

It is an arithmetic number, because the mean of its divisors is an integer number (60005610).

Almost surely, 2^232021663 is an apocalyptic number.

232021663 is a deficient number, since it is larger than the sum of its proper divisors (8000777).

232021663 is an equidigital number, since it uses as much as digits as its factorization.

232021663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000776.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 232021663 is about 15232.2573179421. The cubic root of 232021663 is about 614.4824897142.

Adding to 232021663 its reverse (366120232), we get a palindrome (598141895).

The spelling of 232021663 in words is "two hundred thirty-two million, twenty-one thousand, six hundred sixty-three".