133343385 has 16 divisors (see below), whose sum is σ = 243828096. Its totient is φ = 60956928.

The previous prime is 133343347. The next prime is 133343417. The reversal of 133343385 is 583343331.

It is not a de Polignac number, because 133343385 - 2¹⁶ = 133277849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634864 + ... + 635073.

It is an arithmetic number, because the mean of its divisors is an integer number (15239256).

Almost surely, 2^133343385 is an apocalyptic number.

133343385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133343385 is a deficient number, since it is larger than the sum of its proper divisors (110484711).

133343385 is a wasteful number, since it uses less digits than its factorization.

133343385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269952.

The product of its digits is 38880, while the sum is 33.

The square root of 133343385 is about 11547.4406255239. The cubic root of 133343385 is about 510.8857924181.

The spelling of 133343385 in words is "one hundred thirty-three million, three hundred forty-three thousand, three hundred eighty-five".