31326349 has 4 divisors (see below), whose sum is σ = 31485564. Its totient is φ = 31167136.

The previous prime is 31326343. The next prime is 31326353. The reversal of 31326349 is 94362313.

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 26853124 + 4473225 = 5182^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 31326349 - 2³ = 31326341 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 31326349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31326341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79312 + ... + 79705.

It is an arithmetic number, because the mean of its divisors is an integer number (7871391).

Almost surely, 2^31326349 is an apocalyptic number.

It is an amenable number.

31326349 is a deficient number, since it is larger than the sum of its proper divisors (159215).

31326349 is a wasteful number, since it uses less digits than its factorization.

31326349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159214.

The product of its digits is 11664, while the sum is 31.

The square root of 31326349 is about 5596.9946399831. The cubic root of 31326349 is about 315.2365704184.

It can be divided in two parts, 313 and 26349, that added together give a palindrome (26662).

The spelling of 31326349 in words is "thirty-one million, three hundred twenty-six thousand, three hundred forty-nine".