13871357 has 2 divisors, whose sum is σ = 13871358. Its totient is φ = 13871356.

The previous prime is 13871293. The next prime is 13871359. The reversal of 13871357 is 75317831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8826841 + 5044516 = 2971^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 13871357 - 2⁶ = 13871293 is a prime.

Together with 13871359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13871359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935678 + 6935679.

It is an arithmetic number, because the mean of its divisors is an integer number (6935679).

Almost surely, 2^13871357 is an apocalyptic number.

It is an amenable number.

13871357 is a deficient number, since it is larger than the sum of its proper divisors (1).

13871357 is an equidigital number, since it uses as much as digits as its factorization.

13871357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 13871357 is about 3724.4270700337. The cubic root of 13871357 is about 240.2737443610.

It can be divided in two parts, 1387 and 1357, that added together give a cube (2744 = 14³).

The spelling of 13871357 in words is "thirteen million, eight hundred seventy-one thousand, three hundred fifty-seven".