31422231440244 has 36 divisors (see below), whose sum is σ = 79433557110180. Its totient is φ = 10473399509760.

The previous prime is 31422231440221. The next prime is 31422231440251. The reversal of 31422231440244 is 44204413222413.

31422231440244 is a `hidden beast` number, since 3 + 1 + 42 + 22 + 314 + 40 + 244 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4292404963344 + 27129826476900 = 2071812^2 + 5208630^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31422231440199 and 31422231440208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27670549 + ... + 28783740.

It is an arithmetic number, because the mean of its divisors is an integer number (2206487697505).

Almost surely, 2^{31422231440244} is an apocalyptic number.

It is an amenable number.

31422231440244 is an abundant number, since it is smaller than the sum of its proper divisors (48011325669936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31422231440244 is a wasteful number, since it uses less digits than its factorization.

31422231440244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56469760 (or 56469755 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 31422231440244 its reverse (44204413222413), we get a palindrome (75626644662657).

The spelling of 31422231440244 in words is "thirty-one trillion, four hundred twenty-two billion, two hundred thirty-one million, four hundred forty thousand, two hundred forty-four".