133575031 has 4 divisors (see below), whose sum is σ = 134800600. Its totient is φ = 132349464.

The previous prime is 133575011. The next prime is 133575041. The reversal of 133575031 is 130575331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130575331 = 37 ⋅3529063.

It is a cyclic number.

It is not a de Polignac number, because 133575031 - 2¹⁵ = 133542263 is a prime.

It is a super-2 number, since 2×133575031² = 35684577813301922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133575011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612621 + ... + 612838.

It is an arithmetic number, because the mean of its divisors is an integer number (33700150).

Almost surely, 2^133575031 is an apocalyptic number.

133575031 is a deficient number, since it is larger than the sum of its proper divisors (1225569).

133575031 is a wasteful number, since it uses less digits than its factorization.

133575031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225568.

The product of its (nonzero) digits is 4725, while the sum is 28.

The square root of 133575031 is about 11557.4664611237. The cubic root of 133575031 is about 511.1814605942.

The spelling of 133575031 in words is "one hundred thirty-three million, five hundred seventy-five thousand, thirty-one".