133631334 has 24 divisors (see below), whose sum is σ = 302123952. Its totient is φ = 42606960.

The previous prime is 133631321. The next prime is 133631363. The reversal of 133631334 is 433136331.

It is a junction number, because it is equal to n+sod(n) for n = 133631298 and 133631307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160977 + ... + 161804.

It is an arithmetic number, because the mean of its divisors is an integer number (12588498).

Almost surely, 2^133631334 is an apocalyptic number.

133631334 is an abundant number, since it is smaller than the sum of its proper divisors (168492618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133631334 is a wasteful number, since it uses less digits than its factorization.

133631334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322812 (or 322809 counting only the distinct ones).

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

The square root of 133631334 is about 11559.9019892039. The cubic root of 133631334 is about 511.2532729349.

Adding to 133631334 its reverse (433136331), we get a palindrome (566767665).

The spelling of 133631334 in words is "one hundred thirty-three million, six hundred thirty-one thousand, three hundred thirty-four".