20317132 has 24 divisors (see below), whose sum is σ = 38903760. Its totient is φ = 9207360.

The previous prime is 20317127. The next prime is 20317163. The reversal of 20317132 is 23171302.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24094 + ... + 24922.

It is an arithmetic number, because the mean of its divisors is an integer number (1620990).

Almost surely, 2^20317132 is an apocalyptic number.

20317132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20317132 is a deficient number, since it is larger than the sum of its proper divisors (18586628).

20317132 is a wasteful number, since it uses less digits than its factorization.

20317132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 20317132 is about 4507.4529392995. The cubic root of 20317132 is about 272.8689590119.

Adding to 20317132 its reverse (23171302), we get a palindrome (43488434).

It can be divided in two parts, 203171 and 32, that added together give a triangular number (203203 = T₆₃₇).

The spelling of 20317132 in words is "twenty million, three hundred seventeen thousand, one hundred thirty-two".