133011432 has 24 divisors (see below), whose sum is σ = 360239490. Its totient is φ = 44337120.

The previous prime is 133011413. The next prime is 133011449. The reversal of 133011432 is 234110331.

It can be written as a sum of positive squares in only one way, i.e., 125753796 + 7257636 = 11214^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 923619 + ... + 923762.

Almost surely, 2^133011432 is an apocalyptic number.

133011432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133011432 is an abundant number, since it is smaller than the sum of its proper divisors (227228058).

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

133011432 is a wasteful number, since it uses less digits than its factorization.

133011432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847393 (or 1847386 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133011432 is about 11533.0582240792. The cubic root of 133011432 is about 510.4614969156.

Adding to 133011432 its reverse (234110331), we get a palindrome (367121763).

The spelling of 133011432 in words is "one hundred thirty-three million, eleven thousand, four hundred thirty-two".