13124431277 has 2 divisors, whose sum is σ = 13124431278. Its totient is φ = 13124431276.

The previous prime is 13124431259. The next prime is 13124431301. The reversal of 13124431277 is 77213442131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8443955881 + 4680475396 = 91891^2 + 68414^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124431277 - 2²⁴ = 13107654061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13124431247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562215638 + 6562215639.

It is an arithmetic number, because the mean of its divisors is an integer number (6562215639).

Almost surely, 2^13124431277 is an apocalyptic number.

It is an amenable number.

13124431277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124431277 is an equidigital number, since it uses as much as digits as its factorization.

13124431277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The spelling of 13124431277 in words is "thirteen billion, one hundred twenty-four million, four hundred thirty-one thousand, two hundred seventy-seven".