31444005 has 16 divisors (see below), whose sum is σ = 50831424. Its totient is φ = 16596480.

The previous prime is 31444003. The next prime is 31444009. The reversal of 31444005 is 50044413.

It is not a de Polignac number, because 31444005 - 2¹ = 31444003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9351 + ... + 12260.

It is an arithmetic number, because the mean of its divisors is an integer number (3176964).

Almost surely, 2^31444005 is an apocalyptic number.

It is an amenable number.

31444005 is a deficient number, since it is larger than the sum of its proper divisors (19387419).

31444005 is a wasteful number, since it uses less digits than its factorization.

31444005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21716.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 31444005 is about 5607.4954302255. The cubic root of 31444005 is about 315.6307342029.

Adding to 31444005 its reverse (50044413), we get a palindrome (81488418).

The spelling of 31444005 in words is "thirty-one million, four hundred forty-four thousand, five".