2381543 has 2 divisors, whose sum is σ = 2381544. Its totient is φ = 2381542.

The previous prime is 2381527. The next prime is 2381569. The reversal of 2381543 is 3451832.

It is an a-pointer prime, because the next prime (2381569) can be obtained adding 2381543 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2381543 - 2⁴ = 2381527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190771 + 1190772.

It is an arithmetic number, because the mean of its divisors is an integer number (1190772).

2^2381543 is an apocalyptic number.

2381543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381543 is an equidigital number, since it uses as much as digits as its factorization.

2381543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 2381543 is about 1543.2248701988. The cubic root of 2381543 is about 133.5424918626.

The spelling of 2381543 in words is "two million, three hundred eighty-one thousand, five hundred forty-three".