31222011332 has 6 divisors (see below), whose sum is σ = 54638519838. Its totient is φ = 15611005664.

The previous prime is 31222011329. The next prime is 31222011463. The reversal of 31222011332 is 23311022213.

It can be written as a sum of positive squares in only one way, i.e., 27937116736 + 3284894596 = 167144^2 + 57314^2 .

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 as a sum of consecutive naturals, namely, 3902751413 + ... + 3902751420.

It is an arithmetic number, because the mean of its divisors is an integer number (9106419973).

Almost surely, 2^31222011332 is an apocalyptic number.

It is an amenable number.

31222011332 is a deficient number, since it is larger than the sum of its proper divisors (23416508506).

31222011332 is a wasteful number, since it uses less digits than its factorization.

31222011332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805502837 (or 7805502835 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31222011332 its reverse (23311022213), we get a palindrome (54533033545).

The spelling of 31222011332 in words is "thirty-one billion, two hundred twenty-two million, eleven thousand, three hundred thirty-two".