31111101100297 has 2 divisors, whose sum is σ = 31111101100298. Its totient is φ = 31111101100296.

The previous prime is 31111101100283. The next prime is 31111101100333. The reversal of 31111101100297 is 79200110111113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25669989701136 + 5441111399161 = 5066556^2 + 2332619^2 .

It is an emirp because it is prime and its reverse (79200110111113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31111101100297 is a prime.

It is a super-2 number, since 2×31111101100297² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31111101100237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15555550550148 + 15555550550149.

It is an arithmetic number, because the mean of its divisors is an integer number (15555550550149).

Almost surely, 2^{31111101100297} is an apocalyptic number.

It is an amenable number.

31111101100297 is a deficient number, since it is larger than the sum of its proper divisors (1).

31111101100297 is an equidigital number, since it uses as much as digits as its factorization.

31111101100297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 28.

The spelling of 31111101100297 in words is "thirty-one trillion, one hundred eleven billion, one hundred one million, one hundred thousand, two hundred ninety-seven".