31440243322 has 16 divisors (see below), whose sum is σ = 48439845792. Its totient is φ = 15293713680.

The previous prime is 31440243287. The next prime is 31440243353. The reversal of 31440243322 is 22334204413.

It is an unprimeable number.

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, 1146997 + ... + 1174087.

It is an arithmetic number, because the mean of its divisors is an integer number (3027490362).

Almost surely, 2^31440243322 is an apocalyptic number.

31440243322 is a deficient number, since it is larger than the sum of its proper divisors (16999602470).

31440243322 is a wasteful number, since it uses less digits than its factorization.

31440243322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42813.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31440243322 its reverse (22334204413), we get a palindrome (53774447735).

The spelling of 31440243322 in words is "thirty-one billion, four hundred forty million, two hundred forty-three thousand, three hundred twenty-two".