213232004 has 6 divisors (see below), whose sum is σ = 373156014. Its totient is φ = 106616000.

The previous prime is 213232001. The next prime is 213232007. The reversal of 213232004 is 400232312.

It is an interprime number because it is at equal distance from previous prime (213232001) and next prime (213232007).

It can be written as a sum of positive squares in only one way, i.e., 145202500 + 68029504 = 12050^2 + 8248^2 .

It is not an unprimeable number, because it can be changed into a prime (213232001) by changing a digit.

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 as a sum of consecutive naturals, namely, 26653997 + ... + 26654004.

It is an arithmetic number, because the mean of its divisors is an integer number (62192669).

Almost surely, 2^213232004 is an apocalyptic number.

It is an amenable number.

213232004 is a deficient number, since it is larger than the sum of its proper divisors (159924010).

213232004 is a wasteful number, since it uses less digits than its factorization.

213232004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53308005 (or 53308003 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213232004 is about 14602.4656822059. The cubic root of 213232004 is about 597.4260141930.

Adding to 213232004 its reverse (400232312), we get a palindrome (613464316).

The spelling of 213232004 in words is "two hundred thirteen million, two hundred thirty-two thousand, four".