133823377 has 4 divisors (see below), whose sum is σ = 133873956. Its totient is φ = 133772800.

The previous prime is 133823369. The next prime is 133823399. The reversal of 133823377 is 773328331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 773328331 = 2083 ⋅371257.

It can be written as a sum of positive squares in 2 ways, for example, as 80299521 + 53523856 = 8961^2 + 7316^2 .

It is a cyclic number.

It is not a de Polignac number, because 133823377 - 2³ = 133823369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133823477) 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, 21088 + ... + 26689.

It is an arithmetic number, because the mean of its divisors is an integer number (33468489).

Almost surely, 2^133823377 is an apocalyptic number.

It is an amenable number.

133823377 is a deficient number, since it is larger than the sum of its proper divisors (50579).

133823377 is an equidigital number, since it uses as much as digits as its factorization.

133823377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50578.

The product of its digits is 63504, while the sum is 37.

The square root of 133823377 is about 11568.2054355894. The cubic root of 133823377 is about 511.4980648655.

The spelling of 133823377 in words is "one hundred thirty-three million, eight hundred twenty-three thousand, three hundred seventy-seven".