2021131304 has 16 divisors (see below), whose sum is σ = 3911867520. Its totient is φ = 977966640.

The previous prime is 2021131303. The next prime is 2021131337. The reversal of 2021131304 is 4031311202.

It is not an unprimeable number, because it can be changed into a prime (2021131303) 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, 4074614 + ... + 4075109.

It is an arithmetic number, because the mean of its divisors is an integer number (244491720).

Almost surely, 2^2021131304 is an apocalyptic number.

It is an amenable number.

2021131304 is a deficient number, since it is larger than the sum of its proper divisors (1890736216).

2021131304 is a wasteful number, since it uses less digits than its factorization.

2021131304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149760 (or 8149756 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2021131304 is about 44956.9939386521. The cubic root of 2021131304 is about 1264.3428091308.

Adding to 2021131304 its reverse (4031311202), we get a palindrome (6052442506).

It can be divided in two parts, 20211 and 31304, that added together give a palindrome (51515).

The spelling of 2021131304 in words is "two billion, twenty-one million, one hundred thirty-one thousand, three hundred four".