31122310133 has 2 divisors, whose sum is σ = 31122310134. Its totient is φ = 31122310132.

The previous prime is 31122310081. The next prime is 31122310171. The reversal of 31122310133 is 33101322113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27502242244 + 3620067889 = 165838^2 + 60167^2 .

It is a cyclic number.

It is not a de Polignac number, because 31122310133 - 2⁶ = 31122310069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31122300133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561155066 + 15561155067.

It is an arithmetic number, because the mean of its divisors is an integer number (15561155067).

Almost surely, 2^31122310133 is an apocalyptic number.

It is an amenable number.

31122310133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122310133 is an equidigital number, since it uses as much as digits as its factorization.

31122310133 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 20.

Adding to 31122310133 its reverse (33101322113), we get a palindrome (64223632246).

The spelling of 31122310133 in words is "thirty-one billion, one hundred twenty-two million, three hundred ten thousand, one hundred thirty-three".