2021431113 has 32 divisors (see below), whose sum is σ = 3229430400. Its totient is φ = 1242278208.

The previous prime is 2021431103. The next prime is 2021431133. The reversal of 2021431113 is 3111341202.

It is not a de Polignac number, because 2021431113 - 2²¹ = 2019333961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021431103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287506 + ... + 294452.

It is an arithmetic number, because the mean of its divisors is an integer number (100919700).

Almost surely, 2^2021431113 is an apocalyptic number.

It is an amenable number.

2021431113 is a deficient number, since it is larger than the sum of its proper divisors (1207999287).

2021431113 is a wasteful number, since it uses less digits than its factorization.

2021431113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798 (or 7792 counting only the distinct ones).

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

The square root of 2021431113 is about 44960.3282127700. The cubic root of 2021431113 is about 1264.4053224059.

Adding to 2021431113 its reverse (3111341202), we get a palindrome (5132772315).

The spelling of 2021431113 in words is "two billion, twenty-one million, four hundred thirty-one thousand, one hundred thirteen".