31312101231133 has 2 divisors, whose sum is σ = 31312101231134. Its totient is φ = 31312101231132.

The previous prime is 31312101231113. The next prime is 31312101231193. The reversal of 31312101231133 is 33113210121313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28156639276089 + 3155461955044 = 5306283^2 + 1776362^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312101231133 - 2¹⁷ = 31312101100061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31312101231098 and 31312101231107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312101231113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656050615566 + 15656050615567.

It is an arithmetic number, because the mean of its divisors is an integer number (15656050615567).

Almost surely, 2^{31312101231133} is an apocalyptic number.

It is an amenable number.

31312101231133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312101231133 is an equidigital number, since it uses as much as digits as its factorization.

31312101231133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31312101231133 its reverse (33113210121313), we get a palindrome (64425311352446).

The spelling of 31312101231133 in words is "thirty-one trillion, three hundred twelve billion, one hundred one million, two hundred thirty-one thousand, one hundred thirty-three".