13831403 has 4 divisors (see below), whose sum is σ = 13851360. Its totient is φ = 13811448.

The previous prime is 13831397. The next prime is 13831409. The reversal of 13831403 is 30413831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30413831 = 7 ⋅4344833.

It is an interprime number because it is at equal distance from previous prime (13831397) and next prime (13831409).

It is a cyclic number.

It is not a de Polignac number, because 13831403 - 2⁶ = 13831339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13831409) 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, 8900 + ... + 10337.

It is an arithmetic number, because the mean of its divisors is an integer number (3462840).

Almost surely, 2^13831403 is an apocalyptic number.

13831403 is a deficient number, since it is larger than the sum of its proper divisors (19957).

13831403 is an equidigital number, since it uses as much as digits as its factorization.

13831403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19956.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13831403 is about 3719.0594241017. The cubic root of 13831403 is about 240.0428337900.

The spelling of 13831403 in words is "thirteen million, eight hundred thirty-one thousand, four hundred three".