31103022133 has 2 divisors, whose sum is σ = 31103022134. Its totient is φ = 31103022132.

The previous prime is 31103022131. The next prime is 31103022157. The reversal of 31103022133 is 33122030113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31102144164 + 877969 = 176358^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103022133 - 2¹ = 31103022131 is a prime.

Together with 31103022131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31103022133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31103022131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551511066 + 15551511067.

It is an arithmetic number, because the mean of its divisors is an integer number (15551511067).

Almost surely, 2^31103022133 is an apocalyptic number.

It is an amenable number.

31103022133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31103022133 is an equidigital number, since it uses as much as digits as its factorization.

31103022133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31103022133 its reverse (33122030113), we get a palindrome (64225052246).

The spelling of 31103022133 in words is "thirty-one billion, one hundred three million, twenty-two thousand, one hundred thirty-three".