13781703 has 16 divisors (see below), whose sum is σ = 19869920. Its totient is φ = 8446464.

The previous prime is 13781693. The next prime is 13781731. The reversal of 13781703 is 30718731.

13781703 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13781703 - 2⁴ = 13781687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13788703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11643 + ... + 12771.

It is an arithmetic number, because the mean of its divisors is an integer number (1241870).

Almost surely, 2^13781703 is an apocalyptic number.

13781703 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13781703 is a deficient number, since it is larger than the sum of its proper divisors (6088217).

13781703 is a wasteful number, since it uses less digits than its factorization.

13781703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 13781703 is about 3712.3716139417. The cubic root of 13781703 is about 239.7549756256.

It can be divided in two parts, 1378 and 1703, that added together give a triangular number (3081 = T₇₈).

The spelling of 13781703 in words is "thirteen million, seven hundred eighty-one thousand, seven hundred three".