311142228049 has 2 divisors, whose sum is σ = 311142228050. Its totient is φ = 311142228048.

The previous prime is 311142228029. The next prime is 311142228083. The reversal of 311142228049 is 940822241113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271995627024 + 39146601025 = 521532^2 + 197855^2 .

It is a cyclic number.

It is not a de Polignac number, because 311142228049 - 2¹⁷ = 311142096977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311142227999 and 311142228017.

It is not a weakly prime, because it can be changed into another prime (311142228029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155571114024 + 155571114025.

It is an arithmetic number, because the mean of its divisors is an integer number (155571114025).

Almost surely, 2^311142228049 is an apocalyptic number.

It is an amenable number.

311142228049 is a deficient number, since it is larger than the sum of its proper divisors (1).

311142228049 is an equidigital number, since it uses as much as digits as its factorization.

311142228049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 311142228049 in words is "three hundred eleven billion, one hundred forty-two million, two hundred twenty-eight thousand, forty-nine".