31344169 has 2 divisors, whose sum is σ = 31344170. Its totient is φ = 31344168.

The previous prime is 31344151. The next prime is 31344191. The reversal of 31344169 is 96144313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 129600 = 5587^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 31344169 - 2⁹ = 31343657 is a prime.

It is a super-2 number, since 2×31344169² = 1964913860601122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31344169.

It is not a weakly prime, because it can be changed into another prime (31344139) 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 as a sum of consecutive naturals, namely, 15672084 + 15672085.

It is an arithmetic number, because the mean of its divisors is an integer number (15672085).

Almost surely, 2^31344169 is an apocalyptic number.

It is an amenable number.

31344169 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344169 is an equidigital number, since it uses as much as digits as its factorization.

31344169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 31344169 is about 5598.5863394253. The cubic root of 31344169 is about 315.2963332169.

It can be divided in two parts, 31344 and 169, that added together give a palindrome (31513).

The spelling of 31344169 in words is "thirty-one million, three hundred forty-four thousand, one hundred sixty-nine".