31143230214413 has 2 divisors, whose sum is σ = 31143230214414. Its totient is φ = 31143230214412.

The previous prime is 31143230214337. The next prime is 31143230214427. The reversal of 31143230214413 is 31441203234113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29142485030884 + 2000745183529 = 5398378^2 + 1414477^2 .

It is an emirp because it is prime and its reverse (31441203234113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31143230214413 - 2⁴² = 26745183703309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31143230214413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143230214443) 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, 15571615107206 + 15571615107207.

It is an arithmetic number, because the mean of its divisors is an integer number (15571615107207).

Almost surely, 2^{31143230214413} is an apocalyptic number.

It is an amenable number.

31143230214413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143230214413 is an equidigital number, since it uses as much as digits as its factorization.

31143230214413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 31143230214413 its reverse (31441203234113), we get a palindrome (62584433448526).

The spelling of 31143230214413 in words is "thirty-one trillion, one hundred forty-three billion, two hundred thirty million, two hundred fourteen thousand, four hundred thirteen".