133213293 has 24 divisors (see below), whose sum is σ = 199320576. Its totient is φ = 85644000.

The previous prime is 133213277. The next prime is 133213337. The reversal of 133213293 is 392312331.

133213293 is a `hidden beast` number, since 1 + 332 + 1 + 329 + 3 = 666.

It is not a de Polignac number, because 133213293 - 2⁴ = 133213277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101743 + ... + 103043.

It is an arithmetic number, because the mean of its divisors is an integer number (8305024).

Almost surely, 2^133213293 is an apocalyptic number.

It is an amenable number.

133213293 is a deficient number, since it is larger than the sum of its proper divisors (66107283).

133213293 is a wasteful number, since it uses less digits than its factorization.

133213293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1702 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 133213293 is about 11541.8063144380. The cubic root of 133213293 is about 510.7195954970.

The spelling of 133213293 in words is "one hundred thirty-three million, two hundred thirteen thousand, two hundred ninety-three".