133211407 has 16 divisors (see below), whose sum is σ = 155865600. Its totient is φ = 111494880.

The previous prime is 133211399. The next prime is 133211417. The reversal of 133211407 is 704112331.

It is not a de Polignac number, because 133211407 - 2³ = 133211399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133211417) 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, 52944 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (9741600).

Almost surely, 2^133211407 is an apocalyptic number.

133211407 is a deficient number, since it is larger than the sum of its proper divisors (22654193).

133211407 is a wasteful number, since it uses less digits than its factorization.

133211407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 133211407 is about 11541.7246111662. The cubic root of 133211407 is about 510.7171852728.

Adding to 133211407 its reverse (704112331), we get a palindrome (837323738).

The spelling of 133211407 in words is "one hundred thirty-three million, two hundred eleven thousand, four hundred seven".