2381212543 has 2 divisors, whose sum is σ = 2381212544. Its totient is φ = 2381212542.

The previous prime is 2381212499. The next prime is 2381212597. The reversal of 2381212543 is 3452121832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2381212543 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381212843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190606271 + 1190606272.

It is an arithmetic number, because the mean of its divisors is an integer number (1190606272).

Almost surely, 2^2381212543 is an apocalyptic number.

2381212543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381212543 is an equidigital number, since it uses as much as digits as its factorization.

2381212543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 2381212543 is about 48797.6694423002. The cubic root of 2381212543 is about 1335.3631490195.

The spelling of 2381212543 in words is "two billion, three hundred eighty-one million, two hundred twelve thousand, five hundred forty-three".