133431324 has 48 divisors (see below), whose sum is σ = 344365728. Its totient is φ = 39944448.

The previous prime is 133431307. The next prime is 133431367. The reversal of 133431324 is 423134331.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 133431294 and 133431303.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5787 + ... + 17330.

It is an arithmetic number, because the mean of its divisors is an integer number (7174286).

Almost surely, 2^133431324 is an apocalyptic number.

It is an amenable number.

133431324 is an abundant number, since it is smaller than the sum of its proper divisors (210934404).

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

133431324 is a wasteful number, since it uses less digits than its factorization.

133431324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23174 (or 23172 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 133431324 is about 11551.2477248131. The cubic root of 133431324 is about 510.9980762358.

Adding to 133431324 its reverse (423134331), we get a palindrome (556565655).

The spelling of 133431324 in words is "one hundred thirty-three million, four hundred thirty-one thousand, three hundred twenty-four".