115231421443 has 2 divisors, whose sum is σ = 115231421444. Its totient is φ = 115231421442.

The previous prime is 115231421411. The next prime is 115231421447. The reversal of 115231421443 is 344124132511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115231421443 - 2⁵ = 115231421411 is a prime.

It is not a weakly prime, because it can be changed into another prime (115231421447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57615710721 + 57615710722.

It is an arithmetic number, because the mean of its divisors is an integer number (57615710722).

Almost surely, 2^115231421443 is an apocalyptic number.

115231421443 is a deficient number, since it is larger than the sum of its proper divisors (1).

115231421443 is an equidigital number, since it uses as much as digits as its factorization.

115231421443 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.

Adding to 115231421443 its reverse (344124132511), we get a palindrome (459355553954).

The spelling of 115231421443 in words is "one hundred fifteen billion, two hundred thirty-one million, four hundred twenty-one thousand, four hundred forty-three".