2043431311311 has 12 divisors (see below), whose sum is σ = 3178670928888. Its totient is φ = 1257496191504.

The previous prime is 2043431311303. The next prime is 2043431311381. The reversal of 2043431311311 is 1131131343402.

2043431311311 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 4 + 31 + 311 + 311 = 666.

It is not a de Polignac number, because 2043431311311 - 2³ = 2043431311303 is a prime.

It is a super-2 number, since 2×2043431311311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043431311381) 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, 8732612325 + ... + 8732612558.

It is an arithmetic number, because the mean of its divisors is an integer number (264889244074).

Almost surely, 2^{2043431311311} is an apocalyptic number.

2043431311311 is a deficient number, since it is larger than the sum of its proper divisors (1135239617577).

2043431311311 is a wasteful number, since it uses less digits than its factorization.

2043431311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17465224902 (or 17465224899 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 2043431311311 its reverse (1131131343402), we get a palindrome (3174562654713).

The spelling of 2043431311311 in words is "two trillion, forty-three billion, four hundred thirty-one million, three hundred eleven thousand, three hundred eleven".