13745731 has 2 divisors, whose sum is σ = 13745732. Its totient is φ = 13745730.

The previous prime is 13745689. The next prime is 13745737. The reversal of 13745731 is 13754731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13745731 - 2¹⁹ = 13221443 is a prime.

It is a super-2 number, since 2×13745731² = 377890241448722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13745693 and 13745702.

It is not a weakly prime, because it can be changed into another prime (13745737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6872865 + 6872866.

It is an arithmetic number, because the mean of its divisors is an integer number (6872866).

Almost surely, 2^13745731 is an apocalyptic number.

13745731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13745731 is an equidigital number, since it uses as much as digits as its factorization.

13745731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 13745731 is about 3707.5235670188. The cubic root of 13745731 is about 239.5461968670.

The spelling of 13745731 in words is "thirteen million, seven hundred forty-five thousand, seven hundred thirty-one".