31212332131373 has 2 divisors, whose sum is σ = 31212332131374. Its totient is φ = 31212332131372.

The previous prime is 31212332131369. The next prime is 31212332131417. The reversal of 31212332131373 is 37313123321213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30926478300964 + 285853830409 = 5561158^2 + 534653^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212332131373 - 2² = 31212332131369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212332131973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606166065686 + 15606166065687.

It is an arithmetic number, because the mean of its divisors is an integer number (15606166065687).

Almost surely, 2^{31212332131373} is an apocalyptic number.

It is an amenable number.

31212332131373 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212332131373 is an equidigital number, since it uses as much as digits as its factorization.

31212332131373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 35.

Adding to 31212332131373 its reverse (37313123321213), we get a palindrome (68525455452586).

The spelling of 31212332131373 in words is "thirty-one trillion, two hundred twelve billion, three hundred thirty-two million, one hundred thirty-one thousand, three hundred seventy-three".