31344144013 has 8 divisors (see below), whose sum is σ = 38577408128. Its totient is φ = 24799762224.

The previous prime is 31344144001. The next prime is 31344144059. The reversal of 31344144013 is 31044144313.

It is a happy number.

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 31344144013 - 2²¹ = 31342046861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344144613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172220481 + ... + 172220662.

It is an arithmetic number, because the mean of its divisors is an integer number (4822176016).

Almost surely, 2^31344144013 is an apocalyptic number.

It is an amenable number.

31344144013 is a deficient number, since it is larger than the sum of its proper divisors (7233264115).

31344144013 is a wasteful number, since it uses less digits than its factorization.

31344144013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344441163.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31344144013 its reverse (31044144313), we get a palindrome (62388288326).

The spelling of 31344144013 in words is "thirty-one billion, three hundred forty-four million, one hundred forty-four thousand, thirteen".