311101240397 has 2 divisors, whose sum is σ = 311101240398. Its totient is φ = 311101240396.

The previous prime is 311101240363. The next prime is 311101240403. The reversal of 311101240397 is 793042101113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175578598441 + 135522641956 = 419021^2 + 368134^2 .

It is an emirp because it is prime and its reverse (793042101113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311101240397 - 2²⁴ = 311084463181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311101240997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155550620198 + 155550620199.

It is an arithmetic number, because the mean of its divisors is an integer number (155550620199).

Almost surely, 2^311101240397 is an apocalyptic number.

It is an amenable number.

311101240397 is a deficient number, since it is larger than the sum of its proper divisors (1).

311101240397 is an equidigital number, since it uses as much as digits as its factorization.

311101240397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 311101240397 in words is "three hundred eleven billion, one hundred one million, two hundred forty thousand, three hundred ninety-seven".