14139731 has 2 divisors, whose sum is σ = 14139732. Its totient is φ = 14139730.

The previous prime is 14139709. The next prime is 14139757. The reversal of 14139731 is 13793141.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13793141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14139731 - 2¹⁸ = 13877587 is a prime.

It is a super-2 number, since 2×14139731² = 399863985504722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14139694 and 14139703.

It is not a weakly prime, because it can be changed into another prime (14139701) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7069865 + 7069866.

It is an arithmetic number, because the mean of its divisors is an integer number (7069866).

Almost surely, 2^14139731 is an apocalyptic number.

14139731 is a deficient number, since it is larger than the sum of its proper divisors (1).

14139731 is an equidigital number, since it uses as much as digits as its factorization.

14139731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 14139731 is about 3760.2833669818. The cubic root of 14139731 is about 241.8134105728.

The spelling of 14139731 in words is "fourteen million, one hundred thirty-nine thousand, seven hundred thirty-one".