31444144155 has 12 divisors (see below), whose sum is σ = 54503183280. Its totient is φ = 16770210192.

The previous prime is 31444144141. The next prime is 31444144177. The reversal of 31444144155 is 55144144413.

It is not a de Polignac number, because 31444144155 - 2⁶ = 31444144091 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 349379335 + ... + 349379424.

It is an arithmetic number, because the mean of its divisors is an integer number (4541931940).

Almost surely, 2^31444144155 is an apocalyptic number.

31444144155 is a deficient number, since it is larger than the sum of its proper divisors (23059039125).

31444144155 is a wasteful number, since it uses less digits than its factorization.

31444144155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698758770 (or 698758767 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

Adding to 31444144155 its reverse (55144144413), we get a palindrome (86588288568).

The spelling of 31444144155 in words is "thirty-one billion, four hundred forty-four million, one hundred forty-four thousand, one hundred fifty-five".