2021230131 has 4 divisors (see below), whose sum is σ = 2694973512. Its totient is φ = 1347486752.

The previous prime is 2021230129. The next prime is 2021230151. The reversal of 2021230131 is 1310321202.

2021230131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021230131 - 2¹ = 2021230129 is a prime.

It is a super-2 number, since 2×2021230131² = 8170742484924554322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2021230131.

It is not an unprimeable number, because it can be changed into a prime (2021230151) 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, 336871686 + ... + 336871691.

It is an arithmetic number, because the mean of its divisors is an integer number (673743378).

Almost surely, 2^2021230131 is an apocalyptic number.

2021230131 is a deficient number, since it is larger than the sum of its proper divisors (673743381).

2021230131 is an equidigital number, since it uses as much as digits as its factorization.

2021230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673743380.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2021230131 is about 44958.0930534203. The cubic root of 2021230131 is about 1264.3634162647.

Adding to 2021230131 its reverse (1310321202), we get a palindrome (3331551333).

The spelling of 2021230131 in words is "two billion, twenty-one million, two hundred thirty thousand, one hundred thirty-one".