2140443431 has 12 divisors (see below), whose sum is σ = 2492196408. Its totient is φ = 1832976432.

The previous prime is 2140443427. The next prime is 2140443467. The reversal of 2140443431 is 1343440412.

It is not a de Polignac number, because 2140443431 - 2² = 2140443427 is a prime.

It is a super-2 number, since 2×2140443431² = 9162996162622103522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140443431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140443631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35180 + ... + 74286.

It is an arithmetic number, because the mean of its divisors is an integer number (207683034).

Almost surely, 2^2140443431 is an apocalyptic number.

2140443431 is a deficient number, since it is larger than the sum of its proper divisors (351752977).

2140443431 is a wasteful number, since it uses less digits than its factorization.

2140443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40238 (or 40231 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2140443431 is about 46264.9265751065. The cubic root of 2140443431 is about 1288.7477443755.

Adding to 2140443431 its reverse (1343440412), we get a palindrome (3483883843).

The spelling of 2140443431 in words is "two billion, one hundred forty million, four hundred forty-three thousand, four hundred thirty-one".