20312132 has 12 divisors (see below), whose sum is σ = 35696640. Its totient is φ = 10113096.

The previous prime is 20312113. The next prime is 20312137. The reversal of 20312132 is 23121302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20312137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9668 + ... + 11579.

It is an arithmetic number, because the mean of its divisors is an integer number (2974720).

Almost surely, 2^20312132 is an apocalyptic number.

It is an amenable number.

20312132 is a deficient number, since it is larger than the sum of its proper divisors (15384508).

20312132 is a wasteful number, since it uses less digits than its factorization.

20312132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21490 (or 21488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20312132 is about 4506.8982682106. The cubic root of 20312132 is about 272.8465730319.

Adding to 20312132 its reverse (23121302), we get a palindrome (43433434).

The spelling of 20312132 in words is "twenty million, three hundred twelve thousand, one hundred thirty-two".