97081331 has 2 divisors, whose sum is σ = 97081332. Its totient is φ = 97081330.

The previous prime is 97081291. The next prime is 97081379. The reversal of 97081331 is 13318079.

It is a weak prime.

It is an emirp because it is prime and its reverse (13318079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97081331 - 2²² = 92887027 is a prime.

It is a super-2 number, since 2×97081331² = 18849569657463122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97081381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48540665 + 48540666.

It is an arithmetic number, because the mean of its divisors is an integer number (48540666).

Almost surely, 2^97081331 is an apocalyptic number.

97081331 is a deficient number, since it is larger than the sum of its proper divisors (1).

97081331 is an equidigital number, since it uses as much as digits as its factorization.

97081331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 97081331 is about 9852.9858926114. The cubic root of 97081331 is about 459.5984697102.

The spelling of 97081331 in words is "ninety-seven million, eighty-one thousand, three hundred thirty-one".