71232133 has 12 divisors (see below), whose sum is σ = 83069292. Its totient is φ = 60903360.

The previous prime is 71232101. The next prime is 71232137. The reversal of 71232133 is 33123217.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32069569 + 39162564 = 5663^2 + 6258^2 .

It is not a de Polignac number, because 71232133 - 2⁵ = 71232101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71232137) 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, 20803 + ... + 23983.

It is an arithmetic number, because the mean of its divisors is an integer number (6922441).

Almost surely, 2^71232133 is an apocalyptic number.

It is an amenable number.

71232133 is a deficient number, since it is larger than the sum of its proper divisors (11837159).

71232133 is a wasteful number, since it uses less digits than its factorization.

71232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652 (or 3645 counting only the distinct ones).

The product of its digits is 756, while the sum is 22.

The square root of 71232133 is about 8439.9130919696. The cubic root of 71232133 is about 414.5325612249.

The spelling of 71232133 in words is "seventy-one million, two hundred thirty-two thousand, one hundred thirty-three".