2031343043431 has 16 divisors (see below), whose sum is σ = 2225178184320. Its totient is φ = 1842890473440.

The previous prime is 2031343043381. The next prime is 2031343043441. The reversal of 2031343043431 is 1343403431302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031343043431 is a prime.

It is a super-2 number, since 2×2031343043431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031343043393 and 2031343043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031343043441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3143076 + ... + 3733846.

It is an arithmetic number, because the mean of its divisors is an integer number (139073636520).

Almost surely, 2^{2031343043431} is an apocalyptic number.

2031343043431 is a deficient number, since it is larger than the sum of its proper divisors (193835140889).

2031343043431 is a wasteful number, since it uses less digits than its factorization.

2031343043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595326.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 2031343043431 its reverse (1343403431302), we get a palindrome (3374746474733).

The spelling of 2031343043431 in words is "two trillion, thirty-one billion, three hundred forty-three million, forty-three thousand, four hundred thirty-one".