31212101232133 has 2 divisors, whose sum is σ = 31212101232134. Its totient is φ = 31212101232132.

The previous prime is 31212101232113. The next prime is 31212101232167. The reversal of 31212101232133 is 33123210121213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30860669236644 + 351431995489 = 5555238^2 + 592817^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212101232133 - 2²⁹ = 31211564361221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31212101232098 and 31212101232107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212101232113) 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, 15606050616066 + 15606050616067.

It is an arithmetic number, because the mean of its divisors is an integer number (15606050616067).

Almost surely, 2^{31212101232133} is an apocalyptic number.

It is an amenable number.

31212101232133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212101232133 is an equidigital number, since it uses as much as digits as its factorization.

31212101232133 is an odious number, because the sum of its binary digits is odd.

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

Adding to 31212101232133 its reverse (33123210121213), we get a palindrome (64335311353346).

The spelling of 31212101232133 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, two hundred thirty-two thousand, one hundred thirty-three".