31321212101233 has 32 divisors (see below), whose sum is σ = 33888514682880. Its totient is φ = 28837836318720.

The previous prime is 31321212101213. The next prime is 31321212101239. The reversal of 31321212101233 is 33210121212313.

It is a cyclic number.

It is not a de Polignac number, because 31321212101233 - 2⁹ = 31321212100721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321212101198 and 31321212101207.

It is not an unprimeable number, because it can be changed into a prime (31321212101239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440866128 + ... + 440937166.

It is an arithmetic number, because the mean of its divisors is an integer number (1059016083840).

Almost surely, 2^{31321212101233} is an apocalyptic number.

It is an amenable number.

31321212101233 is a deficient number, since it is larger than the sum of its proper divisors (2567302581647).

31321212101233 is a wasteful number, since it uses less digits than its factorization.

31321212101233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72537.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31321212101233 its reverse (33210121212313), we get a palindrome (64531333313546).

The spelling of 31321212101233 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred one thousand, two hundred thirty-three".