23213132 has 6 divisors (see below), whose sum is σ = 40622988. Its totient is φ = 11606564.

The previous prime is 23213131. The next prime is 23213147. The reversal of 23213132 is 23131232.

It is a self number, because there is not a number n which added to its sum of digits gives 23213132.

It is not an unprimeable number, because it can be changed into a prime (23213131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2901638 + ... + 2901645.

It is an arithmetic number, because the mean of its divisors is an integer number (6770498).

Almost surely, 2^23213132 is an apocalyptic number.

It is an amenable number.

23213132 is a deficient number, since it is larger than the sum of its proper divisors (17409856).

23213132 is a wasteful number, since it uses less digits than its factorization.

23213132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803287 (or 5803285 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 23213132 is about 4818.0008302199. Note that the first 3 decimals coincide. The cubic root of 23213132 is about 285.2624319181.

Adding to 23213132 its reverse (23131232), we get a palindrome (46344364).

The spelling of 23213132 in words is "twenty-three million, two hundred thirteen thousand, one hundred thirty-two".