2021030231 has 16 divisors (see below), whose sum is σ = 2228819328. Its totient is φ = 1817306400.

The previous prime is 2021030203. The next prime is 2021030233. The reversal of 2021030231 is 1320301202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021030231 - 2²² = 2016835927 is a prime.

It is a super-2 number, since 2×2021030231² = 8169126389231826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021030233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285676 + ... + 1287246.

It is an arithmetic number, because the mean of its divisors is an integer number (139301208).

Almost surely, 2^2021030231 is an apocalyptic number.

2021030231 is a deficient number, since it is larger than the sum of its proper divisors (207789097).

2021030231 is a wasteful number, since it uses less digits than its factorization.

2021030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2021030231 is about 44955.8698169661. The cubic root of 2021030231 is about 1264.3217329723.

Adding to 2021030231 its reverse (1320301202), we get a palindrome (3341331433).

The spelling of 2021030231 in words is "two billion, twenty-one million, thirty thousand, two hundred thirty-one".