13655731 has 4 divisors (see below), whose sum is σ = 13732200. Its totient is φ = 13579264.

The previous prime is 13655729. The next prime is 13655753. The reversal of 13655731 is 13755631.

13655731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13755631 = 47 ⋅292673.

It is a cyclic number.

It is not a de Polignac number, because 13655731 - 2¹ = 13655729 is a prime.

It is a super-2 number, since 2×13655731² = 372957978288722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13655693 and 13655702.

It is not an unprimeable number, because it can be changed into a prime (13655771) 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 in 3 ways as a sum of consecutive naturals, for example, 37966 + ... + 38323.

It is an arithmetic number, because the mean of its divisors is an integer number (3433050).

Almost surely, 2^13655731 is an apocalyptic number.

13655731 is a deficient number, since it is larger than the sum of its proper divisors (76469).

13655731 is an equidigital number, since it uses as much as digits as its factorization.

13655731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76468.

The product of its digits is 9450, while the sum is 31.

The square root of 13655731 is about 3695.3661523589. The cubic root of 13655731 is about 239.0222431053.

The spelling of 13655731 in words is "thirteen million, six hundred fifty-five thousand, seven hundred thirty-one".