2140234321 has 4 divisors (see below), whose sum is σ = 2151323812. Its totient is φ = 2129144832.

The previous prime is 2140234303. The next prime is 2140234331. The reversal of 2140234321 is 1234320412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1549209600 + 591024721 = 39360^2 + 24311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140234321 - 2⁵ = 2140234289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140234292 and 2140234301.

It is not an unprimeable number, because it can be changed into a prime (2140234331) 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, 5544456 + ... + 5544841.

It is an arithmetic number, because the mean of its divisors is an integer number (537830953).

Almost surely, 2^2140234321 is an apocalyptic number.

It is an amenable number.

2140234321 is a deficient number, since it is larger than the sum of its proper divisors (11089491).

2140234321 is a wasteful number, since it uses less digits than its factorization.

2140234321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11089490.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2140234321 is about 46262.6666006187. Note that the first 4 decimals coincide. The cubic root of 2140234321 is about 1288.7057750631.

Adding to 2140234321 its reverse (1234320412), we get a palindrome (3374554733).

The spelling of 2140234321 in words is "two billion, one hundred forty million, two hundred thirty-four thousand, three hundred twenty-one".