31132332229 has 2 divisors, whose sum is σ = 31132332230. Its totient is φ = 31132332228.

The previous prime is 31132332193. The next prime is 31132332251. The reversal of 31132332229 is 92223323113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21353100129 + 9779232100 = 146127^2 + 98890^2 .

It is an emirp because it is prime and its reverse (92223323113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31132332229 - 2¹¹ = 31132330181 is a prime.

It is a super-2 number, since 2×31132332229² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31132332229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31132332289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566166114 + 15566166115.

It is an arithmetic number, because the mean of its divisors is an integer number (15566166115).

Almost surely, 2^31132332229 is an apocalyptic number.

It is an amenable number.

31132332229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132332229 is an equidigital number, since it uses as much as digits as its factorization.

31132332229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The spelling of 31132332229 in words is "thirty-one billion, one hundred thirty-two million, three hundred thirty-two thousand, two hundred twenty-nine".