13403831 has 8 divisors (see below), whose sum is σ = 15675264. Its totient is φ = 11221560.

The previous prime is 13403827. The next prime is 13403849. The reversal of 13403831 is 13830431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13403831 - 2² = 13403827 is a prime.

It is a super-2 number, since 2×13403831² = 359325370953122, 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 = 13403797 and 13403806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13403801) 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 7 ways as a sum of consecutive naturals, for example, 21965 + ... + 22566.

It is an arithmetic number, because the mean of its divisors is an integer number (1959408).

Almost surely, 2^13403831 is an apocalyptic number.

13403831 is a deficient number, since it is larger than the sum of its proper divisors (2271433).

13403831 is an equidigital number, since it uses as much as digits as its factorization.

13403831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44581.

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

The square root of 13403831 is about 3661.1242808733. The cubic root of 13403831 is about 237.5434070246.

The spelling of 13403831 in words is "thirteen million, four hundred three thousand, eight hundred thirty-one".