2021311330 has 8 divisors (see below), whose sum is σ = 3638360412. Its totient is φ = 808524528.

The previous prime is 2021311309. The next prime is 2021311337. The reversal of 2021311330 is 331131202.

It can be written as a sum of positive squares in 2 ways, for example, as 1703295441 + 318015889 = 41271^2 + 17833^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2021311337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101065557 + ... + 101065576.

Almost surely, 2^2021311330 is an apocalyptic number.

2021311330 is a deficient number, since it is larger than the sum of its proper divisors (1617049082).

2021311330 is a wasteful number, since it uses less digits than its factorization.

2021311330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202131140.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2021311330 is about 44958.9960964433. The cubic root of 2021311330 is about 1264.3803471539.

Adding to 2021311330 its reverse (331131202), we get a palindrome (2352442532).

The spelling of 2021311330 in words is "two billion, twenty-one million, three hundred eleven thousand, three hundred thirty".