133313404 has 24 divisors (see below), whose sum is σ = 267055488. Its totient is φ = 57042480.

The previous prime is 133313381. The next prime is 133313407. The reversal of 133313404 is 404313331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133313407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15639 + ... + 22609.

It is an arithmetic number, because the mean of its divisors is an integer number (11127312).

Almost surely, 2^133313404 is an apocalyptic number.

133313404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133313404 is an abundant number, since it is smaller than the sum of its proper divisors (133742084).

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

133313404 is a wasteful number, since it uses less digits than its factorization.

133313404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665 (or 7663 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 133313404 is about 11546.1423860959. The cubic root of 133313404 is about 510.8475002672.

Adding to 133313404 its reverse (404313331), we get a palindrome (537626735).

The spelling of 133313404 in words is "one hundred thirty-three million, three hundred thirteen thousand, four hundred four".