98728031 has 2 divisors, whose sum is σ = 98728032. Its totient is φ = 98728030.

The previous prime is 98728013. The next prime is 98728067. The reversal of 98728031 is 13082789.

Together with previous prime (98728013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13082789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98728031 - 2²² = 94533727 is a prime.

It is a super-2 number, since 2×98728031² = 19494448210273922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98728081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49364015 + 49364016.

It is an arithmetic number, because the mean of its divisors is an integer number (49364016).

Almost surely, 2^98728031 is an apocalyptic number.

98728031 is a deficient number, since it is larger than the sum of its proper divisors (1).

98728031 is an equidigital number, since it uses as much as digits as its factorization.

98728031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 98728031 is about 9936.1980153377. The cubic root of 98728031 is about 462.1824941350.

The spelling of 98728031 in words is "ninety-eight million, seven hundred twenty-eight thousand, thirty-one".