133436331 has 12 divisors (see below), whose sum is σ = 220275952. Its totient is φ = 76249296.

The previous prime is 133436299. The next prime is 133436339. The reversal of 133436331 is 133634331.

It is not a de Polignac number, because 133436331 - 2⁵ = 133436299 is a prime.

It is a super-2 number, since 2×133436331² = 35610508861483122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133436295 and 133436304.

It is not an unprimeable number, because it can be changed into a prime (133436339) 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, 1058956 + ... + 1059081.

Almost surely, 2^133436331 is an apocalyptic number.

133436331 is a deficient number, since it is larger than the sum of its proper divisors (86839621).

133436331 is a wasteful number, since it uses less digits than its factorization.

133436331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118050 (or 2118047 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

The square root of 133436331 is about 11551.4644526138. The cubic root of 133436331 is about 511.0044678768.

The spelling of 133436331 in words is "one hundred thirty-three million, four hundred thirty-six thousand, three hundred thirty-one".