20131130 has 8 divisors (see below), whose sum is σ = 36236052. Its totient is φ = 8052448.

The previous prime is 20131129. The next prime is 20131147. The reversal of 20131130 is 3113102.

It can be written as a sum of positive squares in 2 ways, for example, as 19704721 + 426409 = 4439^2 + 653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1006547 + ... + 1006566.

Almost surely, 2^20131130 is an apocalyptic number.

20131130 is a deficient number, since it is larger than the sum of its proper divisors (16104922).

20131130 is a wasteful number, since it uses less digits than its factorization.

20131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013120.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 20131130 is about 4486.7727823013. The cubic root of 20131130 is about 272.0337058144.

Adding to 20131130 its reverse (3113102), we get a palindrome (23244232).

The spelling of 20131130 in words is "twenty million, one hundred thirty-one thousand, one hundred thirty".