2112040343431 has 4 divisors (see below), whose sum is σ = 2112108419200. Its totient is φ = 2111972267664.

The previous prime is 2112040343393. The next prime is 2112040343443. The reversal of 2112040343431 is 1343430402112.

It is a happy number.

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 2112040343431 - 2¹⁵ = 2112040310663 is a prime.

It is a super-2 number, since 2×2112040343431² (a number of 25 digits) 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 2112040343431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112040343531) 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, 33991326 + ... + 34053403.

It is an arithmetic number, because the mean of its divisors is an integer number (528027104800).

Almost surely, 2^{2112040343431} is an apocalyptic number.

2112040343431 is a deficient number, since it is larger than the sum of its proper divisors (68075769).

2112040343431 is an equidigital number, since it uses as much as digits as its factorization.

2112040343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68075768.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2112040343431 its reverse (1343430402112), we get a palindrome (3455470745543).

The spelling of 2112040343431 in words is "two trillion, one hundred twelve billion, forty million, three hundred forty-three thousand, four hundred thirty-one".