31133122330321 has 16 divisors (see below), whose sum is σ = 34842721935168. Its totient is φ = 27572096780800.

The previous prime is 31133122330201. The next prime is 31133122330357. The reversal of 31133122330321 is 12303322133113.

It is a happy number.

It is not a de Polignac number, because 31133122330321 - 2⁹ = 31133122329809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31133122330321.

It is not an unprimeable number, because it can be changed into a prime (31133122330021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50227336 + ... + 50843401.

It is an arithmetic number, because the mean of its divisors is an integer number (2177670120948).

Almost surely, 2^{31133122330321} is an apocalyptic number.

It is an amenable number.

31133122330321 is a deficient number, since it is larger than the sum of its proper divisors (3709599604847).

31133122330321 is a wasteful number, since it uses less digits than its factorization.

31133122330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101071472.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31133122330321 its reverse (12303322133113), we get a palindrome (43436444463434).

The spelling of 31133122330321 in words is "thirty-one trillion, one hundred thirty-three billion, one hundred twenty-two million, three hundred thirty thousand, three hundred twenty-one".