31382133 has 4 divisors (see below), whose sum is σ = 41842848. Its totient is φ = 20921420.

The previous prime is 31382123. The next prime is 31382171. The reversal of 31382133 is 33128313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31382133 - 2⁹ = 31381621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31382123) 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 3 ways as a sum of consecutive naturals, for example, 5230353 + ... + 5230358.

It is an arithmetic number, because the mean of its divisors is an integer number (10460712).

Almost surely, 2^31382133 is an apocalyptic number.

It is an amenable number.

31382133 is a deficient number, since it is larger than the sum of its proper divisors (10460715).

31382133 is a wasteful number, since it uses less digits than its factorization.

31382133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460714.

The product of its digits is 1296, while the sum is 24.

The square root of 31382133 is about 5601.9758121577. The cubic root of 31382133 is about 315.4235773049.

The spelling of 31382133 in words is "thirty-one million, three hundred eighty-two thousand, one hundred thirty-three".