31444140411 has 8 divisors (see below), whose sum is σ = 46583911760. Its totient is φ = 20962760256.

The previous prime is 31444140391. The next prime is 31444140419. The reversal of 31444140411 is 11404144413.

It is not a de Polignac number, because 31444140411 - 2²² = 31439946107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1164597793 = 31444140411 / (3 + 1 + 4 + 4 + 4 + 1 + 4 + 0 + 4 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444140419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582298870 + ... + 582298923.

It is an arithmetic number, because the mean of its divisors is an integer number (5822988970).

Almost surely, 2^31444140411 is an apocalyptic number.

31444140411 is a deficient number, since it is larger than the sum of its proper divisors (15139771349).

31444140411 is a wasteful number, since it uses less digits than its factorization.

31444140411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164597802 (or 1164597796 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 31444140411 its reverse (11404144413), we get a palindrome (42848284824).

The spelling of 31444140411 in words is "thirty-one billion, four hundred forty-four million, one hundred forty thousand, four hundred eleven".