13931003 has 2 divisors, whose sum is σ = 13931004. Its totient is φ = 13931002.

The previous prime is 13930957. The next prime is 13931017. The reversal of 13931003 is 30013931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13931003 - 2⁸ = 13930747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13931023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965501 + 6965502.

It is an arithmetic number, because the mean of its divisors is an integer number (6965502).

Almost surely, 2^13931003 is an apocalyptic number.

13931003 is a deficient number, since it is larger than the sum of its proper divisors (1).

13931003 is an equidigital number, since it uses as much as digits as its factorization.

13931003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 13931003 is about 3732.4258867391. The cubic root of 13931003 is about 240.6176394668.

Adding to 13931003 its reverse (30013931), we get a palindrome (43944934).

The spelling of 13931003 in words is "thirteen million, nine hundred thirty-one thousand, three".