311219891041 has 2 divisors, whose sum is σ = 311219891042. Its totient is φ = 311219891040.

The previous prime is 311219891039. The next prime is 311219891051. The reversal of 311219891041 is 140198912113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246705923025 + 64513968016 = 496695^2 + 253996^2 .

It is a cyclic number.

It is not a de Polignac number, because 311219891041 - 2¹ = 311219891039 is a prime.

Together with 311219891039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 311219890985 and 311219891003.

It is not a weakly prime, because it can be changed into another prime (311219891051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155609945520 + 155609945521.

It is an arithmetic number, because the mean of its divisors is an integer number (155609945521).

Almost surely, 2^311219891041 is an apocalyptic number.

It is an amenable number.

311219891041 is a deficient number, since it is larger than the sum of its proper divisors (1).

311219891041 is an equidigital number, since it uses as much as digits as its factorization.

311219891041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 40.

The spelling of 311219891041 in words is "three hundred eleven billion, two hundred nineteen million, eight hundred ninety-one thousand, forty-one".