75133431 has 6 divisors (see below), whose sum is σ = 108526080. Its totient is φ = 50088948.

The previous prime is 75133423. The next prime is 75133447. The reversal of 75133431 is 13433157.

It is not a de Polignac number, because 75133431 - 2³ = 75133423 is a prime.

It is a super-4 number, since 4×75133431⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 75133395 and 75133404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75133411) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4174071 + ... + 4174088.

It is an arithmetic number, because the mean of its divisors is an integer number (18087680).

Almost surely, 2^75133431 is an apocalyptic number.

75133431 is a deficient number, since it is larger than the sum of its proper divisors (33392649).

75133431 is a wasteful number, since it uses less digits than its factorization.

75133431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348165 (or 8348162 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 75133431 is about 8667.9542569167. The cubic root of 75133431 is about 421.9662735189.

Adding to 75133431 its reverse (13433157), we get a palindrome (88566588).

The spelling of 75133431 in words is "seventy-five million, one hundred thirty-three thousand, four hundred thirty-one".