31344149 has 8 divisors (see below), whose sum is σ = 31779000. Its totient is φ = 30912192.

The previous prime is 31344139. The next prime is 31344151. The reversal of 31344149 is 94144313.

It can be written as a sum of positive squares in 4 ways, for example, as 1423249 + 29920900 = 1193^2 + 5470^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31344149 is a prime.

It is a super-3 number, since 3×31344149³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a 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 in 7 ways as a sum of consecutive naturals, for example, 28787 + ... + 29855.

It is an arithmetic number, because the mean of its divisors is an integer number (3972375).

Almost surely, 2^31344149 is an apocalyptic number.

It is an amenable number.

31344149 is a deficient number, since it is larger than the sum of its proper divisors (434851).

31344149 is a wasteful number, since it uses less digits than its factorization.

31344149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its digits is 5184, while the sum is 29.

The square root of 31344149 is about 5598.5845532599. The cubic root of 31344149 is about 315.2962661557.

The spelling of 31344149 in words is "thirty-one million, three hundred forty-four thousand, one hundred forty-nine".