133923135 has 16 divisors (see below), whose sum is σ = 223593984. Its totient is φ = 68320032.

The previous prime is 133923133. The next prime is 133923149. The reversal of 133923135 is 531329331.

It is not a de Polignac number, because 133923135 - 2¹ = 133923133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133923133) 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, 193747 + ... + 194436.

It is an arithmetic number, because the mean of its divisors is an integer number (13974624).

Almost surely, 2^133923135 is an apocalyptic number.

133923135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133923135 is a deficient number, since it is larger than the sum of its proper divisors (89670849).

133923135 is a wasteful number, since it uses less digits than its factorization.

133923135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388214.

The product of its digits is 7290, while the sum is 30.

The square root of 133923135 is about 11572.5163642140. The cubic root of 133923135 is about 511.6251312305.

The spelling of 133923135 in words is "one hundred thirty-three million, nine hundred twenty-three thousand, one hundred thirty-five".