13131404 has 36 divisors (see below), whose sum is σ = 27214992. Its totient is φ = 5507040.

The previous prime is 13131401. The next prime is 13131407. The reversal of 13131404 is 40413131.

It is an interprime number because it is at equal distance from previous prime (13131401) and next prime (13131407).

It is a super-2 number, since 2×13131404² = 344867542022432, which contains 22 as substring.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13131401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5249 + ... + 7335.

It is an arithmetic number, because the mean of its divisors is an integer number (755972).

Almost surely, 2^13131404 is an apocalyptic number.

It is an amenable number.

13131404 is an abundant number, since it is smaller than the sum of its proper divisors (14083588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131404 is a wasteful number, since it uses less digits than its factorization.

13131404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13131404 is about 3623.7279147309. The cubic root of 13131404 is about 235.9230573648.

Adding to 13131404 its reverse (40413131), we get a palindrome (53544535).

The spelling of 13131404 in words is "thirteen million, one hundred thirty-one thousand, four hundred four".