31133322203321 has 24 divisors (see below), whose sum is σ = 35617557753624. Its totient is φ = 27047116154880.

The previous prime is 31133322203299. The next prime is 31133322203369. The reversal of 31133322203321 is 12330222333113.

It can be written as a sum of positive squares in 12 ways, for example, as 3777441022096 + 27355881181225 = 1943564^2 + 5230285^2 .

It is not a de Polignac number, because 31133322203321 - 2⁴² = 26735275692217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133322202321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142134341 + ... + 142353213.

It is an arithmetic number, because the mean of its divisors is an integer number (1484064906401).

Almost surely, 2^{31133322203321} is an apocalyptic number.

It is an amenable number.

31133322203321 is a deficient number, since it is larger than the sum of its proper divisors (4484235550303).

31133322203321 is a wasteful number, since it uses less digits than its factorization.

31133322203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256781 (or 256764 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31133322203321 its reverse (12330222333113), we get a palindrome (43463544536434).

The spelling of 31133322203321 in words is "thirty-one trillion, one hundred thirty-three billion, three hundred twenty-two million, two hundred three thousand, three hundred twenty-one".