31343313 has 8 divisors (see below), whose sum is σ = 42680448. Its totient is φ = 20450864.

The previous prime is 31343269. The next prime is 31343399. The reversal of 31343313 is 31334313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31343313 - 2⁸ = 31343057 is a prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 31343313.

It is not an unprimeable number, because it can be changed into a prime (31343413) 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 7 ways as a sum of consecutive naturals, for example, 111006 + ... + 111287.

It is an arithmetic number, because the mean of its divisors is an integer number (5335056).

Almost surely, 2^31343313 is an apocalyptic number.

It is an amenable number.

31343313 is a deficient number, since it is larger than the sum of its proper divisors (11337135).

31343313 is a wasteful number, since it uses less digits than its factorization.

31343313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222343.

The product of its digits is 972, while the sum is 21.

The square root of 31343313 is about 5598.5098910335. The cubic root of 31343313 is about 315.2934629742.

Adding to 31343313 its reverse (31334313), we get a palindrome (62677626).

The spelling of 31343313 in words is "thirty-one million, three hundred forty-three thousand, three hundred thirteen".