13712731 has 2 divisors, whose sum is σ = 13712732. Its totient is φ = 13712730.

The previous prime is 13712729. The next prime is 13712747. The reversal of 13712731 is 13721731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13712731 - 2¹ = 13712729 is a prime.

It is a super-2 number, since 2×13712731² = 376077982956722, which contains 22 as substring.

Together with 13712729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13712696 and 13712705.

It is not a weakly prime, because it can be changed into another prime (13712711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856365 + 6856366.

It is an arithmetic number, because the mean of its divisors is an integer number (6856366).

Almost surely, 2^13712731 is an apocalyptic number.

13712731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13712731 is an equidigital number, since it uses as much as digits as its factorization.

13712731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 25.

The square root of 13712731 is about 3703.0704827211. The cubic root of 13712731 is about 239.3543467832.

The spelling of 13712731 in words is "thirteen million, seven hundred twelve thousand, seven hundred thirty-one".