2021013331 has 8 divisors (see below), whose sum is σ = 2064599280. Its totient is φ = 1977629472.

The previous prime is 2021013311. The next prime is 2021013343. The reversal of 2021013331 is 1333101202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021013331 is a prime.

It is a super-3 number, since 3×2021013331³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021013311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30220 + ... + 70393.

It is an arithmetic number, because the mean of its divisors is an integer number (258074910).

Almost surely, 2^2021013331 is an apocalyptic number.

2021013331 is a deficient number, since it is larger than the sum of its proper divisors (43585949).

2021013331 is a wasteful number, since it uses less digits than its factorization.

2021013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101045.

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

The square root of 2021013331 is about 44955.6818544664. The cubic root of 2021013331 is about 1264.3182088461.

Adding to 2021013331 its reverse (1333101202), we get a palindrome (3354114533).

The spelling of 2021013331 in words is "two billion, twenty-one million, thirteen thousand, three hundred thirty-one".