1244311213231 has 2 divisors, whose sum is σ = 1244311213232. Its totient is φ = 1244311213230.

The previous prime is 1244311213181. The next prime is 1244311213237. The reversal of 1244311213231 is 1323121134421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244311213231 - 2⁹ = 1244311212719 is a prime.

It is a super-2 number, since 2×1244311213231² (a number of 25 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 1244311213231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244311213237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622155606615 + 622155606616.

It is an arithmetic number, because the mean of its divisors is an integer number (622155606616).

Almost surely, 2^{1244311213231} is an apocalyptic number.

1244311213231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244311213231 is an equidigital number, since it uses as much as digits as its factorization.

1244311213231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

Adding to 1244311213231 its reverse (1323121134421), we get a palindrome (2567432347652).

The spelling of 1244311213231 in words is "one trillion, two hundred forty-four billion, three hundred eleven million, two hundred thirteen thousand, two hundred thirty-one".