31793133 has 4 divisors (see below), whose sum is σ = 42390848. Its totient is φ = 21195420.

The previous prime is 31793131. The next prime is 31793141. The reversal of 31793133 is 33139713.

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 not a de Polignac number, because 31793133 - 2¹ = 31793131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31793133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31793131) 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, 5298853 + ... + 5298858.

It is an arithmetic number, because the mean of its divisors is an integer number (10597712).

Almost surely, 2^31793133 is an apocalyptic number.

It is an amenable number.

31793133 is a deficient number, since it is larger than the sum of its proper divisors (10597715).

31793133 is a wasteful number, since it uses less digits than its factorization.

31793133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10597714.

The product of its digits is 5103, while the sum is 30.

The square root of 31793133 is about 5638.5399705952. The cubic root of 31793133 is about 316.7946040142.

The spelling of 31793133 in words is "thirty-one million, seven hundred ninety-three thousand, one hundred thirty-three".