2040431431 has 4 divisors (see below), whose sum is σ = 2041123032. Its totient is φ = 2039739832.

The previous prime is 2040431429. The next prime is 2040431447. The reversal of 2040431431 is 1341340402.

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 2040431431 - 2¹ = 2040431429 is a prime.

It is a super-2 number, since 2×2040431431² = 8326720849225415522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040431411) 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 3 ways as a sum of consecutive naturals, for example, 341356 + ... + 347281.

It is an arithmetic number, because the mean of its divisors is an integer number (510280758).

Almost surely, 2^2040431431 is an apocalyptic number.

2040431431 is a deficient number, since it is larger than the sum of its proper divisors (691601).

2040431431 is an equidigital number, since it uses as much as digits as its factorization.

2040431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691600.

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

The square root of 2040431431 is about 45171.1349315024. The cubic root of 2040431431 is about 1268.3545414577.

Adding to 2040431431 its reverse (1341340402), we get a palindrome (3381771833).

The spelling of 2040431431 in words is "two billion, forty million, four hundred thirty-one thousand, four hundred thirty-one".