98111281 has 2 divisors, whose sum is σ = 98111282. Its totient is φ = 98111280.

The previous prime is 98111243. The next prime is 98111297. The reversal of 98111281 is 18211189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 11621281 = 9300^2 + 3409^2 .

It is an emirp because it is prime and its reverse (18211189) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98111281 is a prime.

It is a super-2 number, since 2×98111281² = 19251646918921922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98111081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49055640 + 49055641.

It is an arithmetic number, because the mean of its divisors is an integer number (49055641).

Almost surely, 2^98111281 is an apocalyptic number.

It is an amenable number.

98111281 is a deficient number, since it is larger than the sum of its proper divisors (1).

98111281 is an equidigital number, since it uses as much as digits as its factorization.

98111281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 31.

The square root of 98111281 is about 9905.1138812232. The cubic root of 98111281 is about 461.2180713450.

The spelling of 98111281 in words is "ninety-eight million, one hundred eleven thousand, two hundred eighty-one".