133821364 has 12 divisors (see below), whose sum is σ = 236506788. Its totient is φ = 66248000.

The previous prime is 133821329. The next prime is 133821367. The reversal of 133821364 is 463128331.

It can be written as a sum of positive squares in 2 ways, for example, as 64931364 + 68890000 = 8058^2 + 8300^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133821367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165217 + ... + 166024.

It is an arithmetic number, because the mean of its divisors is an integer number (19708899).

Almost surely, 2^133821364 is an apocalyptic number.

It is an amenable number.

133821364 is a deficient number, since it is larger than the sum of its proper divisors (102685424).

133821364 is a wasteful number, since it uses less digits than its factorization.

133821364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331346 (or 331344 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 133821364 is about 11568.1184295459. The cubic root of 133821364 is about 511.4955001647.

Adding to 133821364 its reverse (463128331), we get a palindrome (596949695).

The spelling of 133821364 in words is "one hundred thirty-three million, eight hundred twenty-one thousand, three hundred sixty-four".