31222240044 has 12 divisors (see below), whose sum is σ = 72851893464. Its totient is φ = 10407413344.

The previous prime is 31222239977. The next prime is 31222240079. The reversal of 31222240044 is 44004222213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31222239996 and 31222240023.

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 3 ways as a sum of consecutive naturals, for example, 1300926657 + ... + 1300926680.

It is an arithmetic number, because the mean of its divisors is an integer number (6070991122).

Almost surely, 2^31222240044 is an apocalyptic number.

It is an amenable number.

31222240044 is an abundant number, since it is smaller than the sum of its proper divisors (41629653420).

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

31222240044 is a wasteful number, since it uses less digits than its factorization.

31222240044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601853344 (or 2601853342 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 31222240044 its reverse (44004222213), we get a palindrome (75226462257).

The spelling of 31222240044 in words is "thirty-one billion, two hundred twenty-two million, two hundred forty thousand, forty-four".