31133233320312 has 16 divisors (see below), whose sum is σ = 77833083300840. Its totient is φ = 10377744440096.

The previous prime is 31133233320289. The next prime is 31133233320313. The reversal of 31133233320312 is 21302333233113.

It is a self number, because there is not a number n which added to its sum of digits gives 31133233320312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133233320313) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 648609027483 + ... + 648609027530.

Almost surely, 2^{31133233320312} is an apocalyptic number.

It is an amenable number.

31133233320312 is an abundant number, since it is smaller than the sum of its proper divisors (46699849980528).

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

31133233320312 is a wasteful number, since it uses less digits than its factorization.

31133233320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297218055022 (or 1297218055018 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 30.

Adding to 31133233320312 its reverse (21302333233113), we get a palindrome (52435566553425).

The spelling of 31133233320312 in words is "thirty-one trillion, one hundred thirty-three billion, two hundred thirty-three million, three hundred twenty thousand, three hundred twelve".