2021231982 has 32 divisors (see below), whose sum is σ = 5039956224. Its totient is φ = 524995200.

The previous prime is 2021231969. The next prime is 2021231987. The reversal of 2021231982 is 2891321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021231987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2187019 + ... + 2187942.

It is an arithmetic number, because the mean of its divisors is an integer number (157498632).

Almost surely, 2^2021231982 is an apocalyptic number.

2021231982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2021231982 is an abundant number, since it is smaller than the sum of its proper divisors (3018724242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021231982 is a wasteful number, since it uses less digits than its factorization.

2021231982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374984.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2021231982 is about 44958.1136392531. The cubic root of 2021231982 is about 1264.3638022237.

The spelling of 2021231982 in words is "two billion, twenty-one million, two hundred thirty-one thousand, nine hundred eighty-two".