98197531 has 2 divisors, whose sum is σ = 98197532. Its totient is φ = 98197530.

The previous prime is 98197507. The next prime is 98197571. The reversal of 98197531 is 13579189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98197531 - 2⁷ = 98197403 is a prime.

It is a super-2 number, since 2×98197531² = 19285510188991922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98197571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49098765 + 49098766.

It is an arithmetic number, because the mean of its divisors is an integer number (49098766).

Almost surely, 2^98197531 is an apocalyptic number.

98197531 is a deficient number, since it is larger than the sum of its proper divisors (1).

98197531 is an equidigital number, since it uses as much as digits as its factorization.

98197531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 98197531 is about 9909.4667364092. The cubic root of 98197531 is about 461.3531846130.

The spelling of 98197531 in words is "ninety-eight million, one hundred ninety-seven thousand, five hundred thirty-one".