115143424321 has 2 divisors, whose sum is σ = 115143424322. Its totient is φ = 115143424320.

The previous prime is 115143424289. The next prime is 115143424327. The reversal of 115143424321 is 123424341511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93896280625 + 21247143696 = 306425^2 + 145764^2 .

It is a cyclic number.

It is not a de Polignac number, because 115143424321 - 2⁵ = 115143424289 is a prime.

It is a super-2 number, since 2×115143424321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115143424327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57571712160 + 57571712161.

It is an arithmetic number, because the mean of its divisors is an integer number (57571712161).

Almost surely, 2^115143424321 is an apocalyptic number.

It is an amenable number.

115143424321 is a deficient number, since it is larger than the sum of its proper divisors (1).

115143424321 is an equidigital number, since it uses as much as digits as its factorization.

115143424321 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 115143424321 its reverse (123424341511), we get a palindrome (238567765832).

The spelling of 115143424321 in words is "one hundred fifteen billion, one hundred forty-three million, four hundred twenty-four thousand, three hundred twenty-one".