13713731 has 2 divisors, whose sum is σ = 13713732. Its totient is φ = 13713730.

The previous prime is 13713701. The next prime is 13713757. The reversal of 13713731 is 13731731.

It is an a-pointer prime, because the next prime (13713757) can be obtained adding 13713731 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13713731 is a prime.

It is a super-2 number, since 2×13713731² = 376132835880722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13713731.

It is not a weakly prime, because it can be changed into another prime (13713701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856865 + 6856866.

It is an arithmetic number, because the mean of its divisors is an integer number (6856866).

Almost surely, 2^13713731 is an apocalyptic number.

13713731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13713731 is an equidigital number, since it uses as much as digits as its factorization.

13713731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323, while the sum is 26.

The square root of 13713731 is about 3703.2055033444. The cubic root of 13713731 is about 239.3601649417.

It can be divided in two parts, 1371 and 3731, that multiplied together give a triangular number (5115201 = T₃₁₉₈).

The spelling of 13713731 in words is "thirteen million, seven hundred thirteen thousand, seven hundred thirty-one".