2140402343 has 4 divisors (see below), whose sum is σ = 2175490968. Its totient is φ = 2105313720.

The previous prime is 2140402321. The next prime is 2140402373. The reversal of 2140402343 is 3432040412.

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

It is a cyclic number.

It is not a de Polignac number, because 2140402343 - 2⁶ = 2140402279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140402373) 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, 17544221 + ... + 17544342.

It is an arithmetic number, because the mean of its divisors is an integer number (543872742).

Almost surely, 2^2140402343 is an apocalyptic number.

2140402343 is a deficient number, since it is larger than the sum of its proper divisors (35088625).

2140402343 is an equidigital number, since it uses as much as digits as its factorization.

2140402343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35088624.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2140402343 is about 46264.4825216926. The cubic root of 2140402343 is about 1288.7394980459.

Adding to 2140402343 its reverse (3432040412), we get a palindrome (5572442755).

The spelling of 2140402343 in words is "two billion, one hundred forty million, four hundred two thousand, three hundred forty-three".