133404823 has 2 divisors, whose sum is σ = 133404824. Its totient is φ = 133404822.

The previous prime is 133404809. The next prime is 133404863. The reversal of 133404823 is 328404331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133404823 is a prime.

It is a super-2 number, since 2×133404823² = 35593693599322658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133404791 and 133404800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133404863) 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 as a sum of consecutive naturals, namely, 66702411 + 66702412.

It is an arithmetic number, because the mean of its divisors is an integer number (66702412).

Almost surely, 2^133404823 is an apocalyptic number.

133404823 is a deficient number, since it is larger than the sum of its proper divisors (1).

133404823 is an equidigital number, since it uses as much as digits as its factorization.

133404823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 133404823 is about 11550.1005623328. The cubic root of 133404823 is about 510.9642439586.

The spelling of 133404823 in words is "one hundred thirty-three million, four hundred four thousand, eight hundred twenty-three".