2147231140 has 24 divisors (see below), whose sum is σ = 4542104952. Its totient is φ = 852622080.

The previous prime is 2147231129. The next prime is 2147231147. The reversal of 2147231140 is 411327412.

It can be written as a sum of positive squares in 4 ways, for example, as 356756544 + 1790474596 = 18888^2 + 42314^2 .

It is a super-2 number, since 2×2147231140² = 9221203137171399200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147231147) 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 7 ways as a sum of consecutive naturals, for example, 389091 + ... + 394570.

It is an arithmetic number, because the mean of its divisors is an integer number (189254373).

Almost surely, 2^2147231140 is an apocalyptic number.

2147231140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2147231140 is an abundant number, since it is smaller than the sum of its proper divisors (2394873812).

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

2147231140 is a wasteful number, since it uses less digits than its factorization.

2147231140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783807 (or 783805 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2147231140 is about 46338.2254731447. The cubic root of 2147231140 is about 1290.1085860961.

Adding to 2147231140 its reverse (411327412), we get a palindrome (2558558552).

The spelling of 2147231140 in words is "two billion, one hundred forty-seven million, two hundred thirty-one thousand, one hundred forty".