31799093 has 4 divisors (see below), whose sum is σ = 31813260. Its totient is φ = 31784928.

The previous prime is 31799081. The next prime is 31799101. The reversal of 31799093 is 39099713.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20994724 + 10804369 = 4582^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 31799093 - 2⁶ = 31799029 is a prime.

It is a super-2 number, since 2×31799093² = 2022364631245298, which contains 22 as substring.

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 31799093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31799003) 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, 2888 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (7953315).

Almost surely, 2^31799093 is an apocalyptic number.

It is an amenable number.

31799093 is a deficient number, since it is larger than the sum of its proper divisors (14167).

31799093 is a wasteful number, since it uses less digits than its factorization.

31799093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 31799093 is about 5639.0684514377. The cubic root of 31799093 is about 316.8143984131.

The spelling of 31799093 in words is "thirty-one million, seven hundred ninety-nine thousand, ninety-three".