13731927 has 32 divisors (see below), whose sum is σ = 21315840. Its totient is φ = 7840800.

The previous prime is 13731919. The next prime is 13731931. The reversal of 13731927 is 72913731.

It is a happy number.

It is not a de Polignac number, because 13731927 - 2³ = 13731919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13731917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75777 + ... + 75957.

It is an arithmetic number, because the mean of its divisors is an integer number (666120).

Almost surely, 2^13731927 is an apocalyptic number.

13731927 is a deficient number, since it is larger than the sum of its proper divisors (7583913).

13731927 is a wasteful number, since it uses less digits than its factorization.

13731927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 214 counting only the distinct ones).

The product of its digits is 7938, while the sum is 33.

The square root of 13731927 is about 3705.6614794123. The cubic root of 13731927 is about 239.4659827936.

The spelling of 13731927 in words is "thirteen million, seven hundred thirty-one thousand, nine hundred twenty-seven".