814237243 has 2 divisors, whose sum is σ = 814237244. Its totient is φ = 814237242.

The previous prime is 814237199. The next prime is 814237271. The reversal of 814237243 is 342732418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 814237243 - 2¹⁷ = 814106171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 814237199 and 814237208.

It is not a weakly prime, because it can be changed into another prime (814237273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407118621 + 407118622.

It is an arithmetic number, because the mean of its divisors is an integer number (407118622).

Almost surely, 2^814237243 is an apocalyptic number.

814237243 is a deficient number, since it is larger than the sum of its proper divisors (1).

814237243 is an equidigital number, since it uses as much as digits as its factorization.

814237243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 814237243 is about 28534.8426138992. The cubic root of 814237243 is about 933.7923700164.

It can be divided in two parts, 81 and 4237243, that added together give a palindrome (4237324).

The spelling of 814237243 in words is "eight hundred fourteen million, two hundred thirty-seven thousand, two hundred forty-three".