31799713 has 4 divisors (see below), whose sum is σ = 34690608. Its totient is φ = 28908820.

The previous prime is 31799699. The next prime is 31799717.

It is a happy number.

31799713 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-31799713 is a prime.

It is a super-2 number, since 2×31799713² = 2022443493764738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31799717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445431 + ... + 1445452.

It is an arithmetic number, because the mean of its divisors is an integer number (8672652).

Almost surely, 2^31799713 is an apocalyptic number.

It is an amenable number.

31799713 is a deficient number, since it is larger than the sum of its proper divisors (2890895).

31799713 is a wasteful number, since it uses less digits than its factorization.

31799713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890894.

The product of its digits is 35721, while the sum is 40.

The square root of 31799713 is about 5639.1234247886. The cubic root of 31799713 is about 316.8164574199.

The spelling of 31799713 in words is "thirty-one million, seven hundred ninety-nine thousand, seven hundred thirteen".