133211392 has 18 divisors (see below), whose sum is σ = 265902938. Its totient is φ = 66605568.

The previous prime is 133211363. The next prime is 133211399. The reversal of 133211392 is 293112331.

133211392 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 106832896 + 26378496 = 10336^2 + 5136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133211399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259923 + ... + 260434.

Almost surely, 2^133211392 is an apocalyptic number.

It is an amenable number.

133211392 is a deficient number, since it is larger than the sum of its proper divisors (132691546).

133211392 is an frugal number, since it uses more digits than its factorization.

133211392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520373 (or 520359 counting only the distinct ones).

The product of its digits is 972, while the sum is 25.

The square root of 133211392 is about 11541.7239613500. The cubic root of 133211392 is about 510.7171661034.

The spelling of 133211392 in words is "one hundred thirty-three million, two hundred eleven thousand, three hundred ninety-two".