13931048279 has 2 divisors, whose sum is σ = 13931048280. Its totient is φ = 13931048278.

The previous prime is 13931048239. The next prime is 13931048297. The reversal of 13931048279 is 97284013931.

Together with next prime (13931048297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13931048279 - 2²⁸ = 13662612823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13931048239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965524139 + 6965524140.

It is an arithmetic number, because the mean of its divisors is an integer number (6965524140).

Almost surely, 2^13931048279 is an apocalyptic number.

13931048279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13931048279 is an equidigital number, since it uses as much as digits as its factorization.

13931048279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 13931048279 in words is "thirteen billion, nine hundred thirty-one million, forty-eight thousand, two hundred seventy-nine".