13409031 has 4 divisors (see below), whose sum is σ = 17878712. Its totient is φ = 8939352.

The previous prime is 13409027. The next prime is 13409047. The reversal of 13409031 is 13090431.

13409031 is digitally balanced in base 2, 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: 13090431 = 3 ⋅4363477.

It is not a de Polignac number, because 13409031 - 2² = 13409027 is a prime.

It is a super-2 number, since 2×13409031² = 359604224717922, 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 = 13408989 and 13409007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2234836 + ... + 2234841.

It is an arithmetic number, because the mean of its divisors is an integer number (4469678).

Almost surely, 2^13409031 is an apocalyptic number.

13409031 is a deficient number, since it is larger than the sum of its proper divisors (4469681).

13409031 is an equidigital number, since it uses as much as digits as its factorization.

13409031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469680.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13409031 is about 3661.8343763748. The cubic root of 13409031 is about 237.5741212788.

Adding to 13409031 its reverse (13090431), we get a palindrome (26499462).

The spelling of 13409031 in words is "thirteen million, four hundred nine thousand, thirty-one".