13340985731 has 2 divisors, whose sum is σ = 13340985732. Its totient is φ = 13340985730.

The previous prime is 13340985727. The next prime is 13340985737. The reversal of 13340985731 is 13758904331.

13340985731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13340985731 - 2² = 13340985727 is a prime.

It is a super-2 number, since 2×13340985731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13340985737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6670492865 + 6670492866.

It is an arithmetic number, because the mean of its divisors is an integer number (6670492866).

Almost surely, 2^13340985731 is an apocalyptic number.

13340985731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13340985731 is an equidigital number, since it uses as much as digits as its factorization.

13340985731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 13340985731 in words is "thirteen billion, three hundred forty million, nine hundred eighty-five thousand, seven hundred thirty-one".