133431339 has 12 divisors (see below), whose sum is σ = 180887928. Its totient is φ = 87488640.

The previous prime is 133431307. The next prime is 133431367. The reversal of 133431339 is 933134331.

It is not a de Polignac number, because 133431339 - 2⁵ = 133431307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133431239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5187 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (15073994).

Almost surely, 2^133431339 is an apocalyptic number.

133431339 is a deficient number, since it is larger than the sum of its proper divisors (47456589).

133431339 is an equidigital number, since it uses as much as digits as its factorization.

133431339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12078 (or 12017 counting only the distinct ones).

The product of its digits is 8748, while the sum is 30.

The square root of 133431339 is about 11551.2483740936. The cubic root of 133431339 is about 510.9980953842.

The spelling of 133431339 in words is "one hundred thirty-three million, four hundred thirty-one thousand, three hundred thirty-nine".