232305021 has 12 divisors (see below), whose sum is σ = 361363548. Its totient is φ = 142956864.

The previous prime is 232304999. The next prime is 232305023. The reversal of 232305021 is 120503232.

It can be written as a sum of positive squares in 2 ways, for example, as 95765796 + 136539225 = 9786^2 + 11685^2 .

It is not a de Polignac number, because 232305021 - 2⁶ = 232304957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 232304985 and 232305003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232305023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 992640 + ... + 992873.

It is an arithmetic number, because the mean of its divisors is an integer number (30113629).

Almost surely, 2^232305021 is an apocalyptic number.

It is an amenable number.

232305021 is a deficient number, since it is larger than the sum of its proper divisors (129058527).

232305021 is a wasteful number, since it uses less digits than its factorization.

232305021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985532 (or 1985529 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 232305021 is about 15241.5557276808. Note that the first 3 decimals coincide. The cubic root of 232305021 is about 614.7325348953.

Adding to 232305021 its reverse (120503232), we get a palindrome (352808253).

The spelling of 232305021 in words is "two hundred thirty-two million, three hundred five thousand, twenty-one".