103111210311997 has 2 divisors, whose sum is σ = 103111210311998. Its totient is φ = 103111210311996.

The previous prime is 103111210311971. The next prime is 103111210312039. The reversal of 103111210311997 is 799113012111301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62213381902116 + 40897828409881 = 7887546^2 + 6395141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103111210311997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103111210311947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51555605155998 + 51555605155999.

It is an arithmetic number, because the mean of its divisors is an integer number (51555605155999).

Almost surely, 2^{103111210311997} is an apocalyptic number.

It is an amenable number.

103111210311997 is a deficient number, since it is larger than the sum of its proper divisors (1).

103111210311997 is an equidigital number, since it uses as much as digits as its factorization.

103111210311997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 103111210311997 in words is "one hundred three trillion, one hundred eleven billion, two hundred ten million, three hundred eleven thousand, nine hundred ninety-seven".