13813771 has 2 divisors, whose sum is σ = 13813772. Its totient is φ = 13813770.

The previous prime is 13813759. The next prime is 13813783. The reversal of 13813771 is 17731831.

It is a balanced prime because it is at equal distance from previous prime (13813759) and next prime (13813783).

It is a cyclic number.

It is not a de Polignac number, because 13813771 - 2⁷ = 13813643 is a prime.

It is not a weakly prime, because it can be changed into another prime (13813721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906885 + 6906886.

It is an arithmetic number, because the mean of its divisors is an integer number (6906886).

Almost surely, 2^13813771 is an apocalyptic number.

13813771 is a deficient number, since it is larger than the sum of its proper divisors (1).

13813771 is an equidigital number, since it uses as much as digits as its factorization.

13813771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 31.

The square root of 13813771 is about 3716.6881763204. The cubic root of 13813771 is about 239.9407897916.

The spelling of 13813771 in words is "thirteen million, eight hundred thirteen thousand, seven hundred seventy-one".