311357505163 has 2 divisors, whose sum is σ = 311357505164. Its totient is φ = 311357505162.

The previous prime is 311357505101. The next prime is 311357505203. The reversal of 311357505163 is 361505753113.

It is a happy number.

It is an a-pointer prime, because the next prime (311357505203) can be obtained adding 311357505163 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311357505163 - 2⁹ = 311357504651 is a prime.

It is not a weakly prime, because it can be changed into another prime (311357505463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155678752581 + 155678752582.

It is an arithmetic number, because the mean of its divisors is an integer number (155678752582).

Almost surely, 2^311357505163 is an apocalyptic number.

311357505163 is a deficient number, since it is larger than the sum of its proper divisors (1).

311357505163 is an equidigital number, since it uses as much as digits as its factorization.

311357505163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 40.

The spelling of 311357505163 in words is "three hundred eleven billion, three hundred fifty-seven million, five hundred five thousand, one hundred sixty-three".