31212222113033 has 8 divisors (see below), whose sum is σ = 33613383136200. Its totient is φ = 28811092641408.

The previous prime is 31212222112999. The next prime is 31212222113099. The reversal of 31212222113033 is 33031122221213.

It can be written as a sum of positive squares in 4 ways, for example, as 9044773547209 + 22167448565824 = 3007453^2 + 4708232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31212222113033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31212222112993 and 31212222113011.

It is not an unprimeable number, because it can be changed into a prime (31212222112033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5813078 + ... + 9808991.

It is an arithmetic number, because the mean of its divisors is an integer number (4201672892025).

Almost surely, 2^{31212222113033} is an apocalyptic number.

It is an amenable number.

31212222113033 is a deficient number, since it is larger than the sum of its proper divisors (2401161023167).

31212222113033 is a wasteful number, since it uses less digits than its factorization.

31212222113033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15775771.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31212222113033 its reverse (33031122221213), we get a palindrome (64243344334246).

The spelling of 31212222113033 in words is "thirty-one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred thirteen thousand, thirty-three".