2021143131 has 48 divisors (see below), whose sum is σ = 3506868000. Its totient is φ = 1147075776.

The previous prime is 2021143129. The next prime is 2021143169. The reversal of 2021143131 is 1313411202.

2021143131 is a `hidden beast` number, since 20 + 211 + 431 + 3 + 1 = 666.

2021143131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2021143131 - 2¹ = 2021143129 is a prime.

It is a super-2 number, since 2×2021143131² = 8170039111976966322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021143171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192001 + ... + 202253.

It is an arithmetic number, because the mean of its divisors is an integer number (73059750).

Almost surely, 2^2021143131 is an apocalyptic number.

2021143131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2021143131 is a deficient number, since it is larger than the sum of its proper divisors (1485724869).

2021143131 is a wasteful number, since it uses less digits than its factorization.

2021143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425 (or 10412 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2021143131 is about 44957.1254752792. The cubic root of 2021143131 is about 1264.3452752996.

Adding to 2021143131 its reverse (1313411202), we get a palindrome (3334554333).

The spelling of 2021143131 in words is "two billion, twenty-one million, one hundred forty-three thousand, one hundred thirty-one".