133405383 has 16 divisors (see below), whose sum is σ = 181227776. Its totient is φ = 87272640.

The previous prime is 133405381. The next prime is 133405397. The reversal of 133405383 is 383504331.

It is not a de Polignac number, because 133405383 - 2¹ = 133405381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133405383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133405381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44766 + ... + 47652.

It is an arithmetic number, because the mean of its divisors is an integer number (11326736).

Almost surely, 2^133405383 is an apocalyptic number.

133405383 is a deficient number, since it is larger than the sum of its proper divisors (47822393).

133405383 is a wasteful number, since it uses less digits than its factorization.

133405383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 133405383 is about 11550.1248045205. The cubic root of 133405383 is about 510.9649589242.

The spelling of 133405383 in words is "one hundred thirty-three million, four hundred five thousand, three hundred eighty-three".