13404031 has 4 divisors (see below), whose sum is σ = 13418064. Its totient is φ = 13390000.

The previous prime is 13404029. The next prime is 13404047. The reversal of 13404031 is 13040431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13040431 = 193 ⋅67567.

It is a cyclic number.

It is not a de Polignac number, because 13404031 - 2¹ = 13404029 is a prime.

It is a super-2 number, since 2×13404031² = 359336094097922, 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 = 13403996 and 13404014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404011) 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, 5470 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (3354516).

Almost surely, 2^13404031 is an apocalyptic number.

13404031 is a deficient number, since it is larger than the sum of its proper divisors (14033).

13404031 is a wasteful number, since it uses less digits than its factorization.

13404031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13404031 is about 3661.1515947854. The cubic root of 13404031 is about 237.5445884890.

Adding to 13404031 its reverse (13040431), we get a palindrome (26444462).

The spelling of 13404031 in words is "thirteen million, four hundred four thousand, thirty-one".