31121033222332 has 12 divisors (see below), whose sum is σ = 55073738568240. Its totient is φ = 15385679345696.

The previous prime is 31121033222263. The next prime is 31121033222341. The reversal of 31121033222332 is 23322233012113.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31121033222332.

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 3 ways as a sum of consecutive naturals, for example, 43709315968 + ... + 43709316679.

It is an arithmetic number, because the mean of its divisors is an integer number (4589478214020).

Almost surely, 2^{31121033222332} is an apocalyptic number.

It is an amenable number.

31121033222332 is a deficient number, since it is larger than the sum of its proper divisors (23952705345908).

31121033222332 is a wasteful number, since it uses less digits than its factorization.

31121033222332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87418632740 (or 87418632738 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31121033222332 its reverse (23322233012113), we get a palindrome (54443266234445).

The spelling of 31121033222332 in words is "thirty-one trillion, one hundred twenty-one billion, thirty-three million, two hundred twenty-two thousand, three hundred thirty-two".