3111211213249 has 2 divisors, whose sum is σ = 3111211213250. Its totient is φ = 3111211213248.

The previous prime is 3111211213241. The next prime is 3111211213283. The reversal of 3111211213249 is 9423121121113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3075088409649 + 36122803600 = 1753593^2 + 190060^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111211213249 - 2³ = 3111211213241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3111211213249.

It is not a weakly prime, because it can be changed into another prime (3111211213241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555605606624 + 1555605606625.

It is an arithmetic number, because the mean of its divisors is an integer number (1555605606625).

Almost surely, 2^{3111211213249} is an apocalyptic number.

It is an amenable number.

3111211213249 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111211213249 is an equidigital number, since it uses as much as digits as its factorization.

3111211213249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The spelling of 3111211213249 in words is "three trillion, one hundred eleven billion, two hundred eleven million, two hundred thirteen thousand, two hundred forty-nine".