97132309 has 2 divisors, whose sum is σ = 97132310. Its totient is φ = 97132308.

The previous prime is 97132303. The next prime is 97132337. The reversal of 97132309 is 90323179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 47472100 = 7047^2 + 6890^2 .

It is a cyclic number.

It is not a de Polignac number, because 97132309 - 2⁷ = 97132181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97132303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48566154 + 48566155.

It is an arithmetic number, because the mean of its divisors is an integer number (48566155).

Almost surely, 2^97132309 is an apocalyptic number.

It is an amenable number.

97132309 is a deficient number, since it is larger than the sum of its proper divisors (1).

97132309 is an equidigital number, since it uses as much as digits as its factorization.

97132309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 97132309 is about 9855.5724846404. The cubic root of 97132309 is about 459.6789016215.

The spelling of 97132309 in words is "ninety-seven million, one hundred thirty-two thousand, three hundred nine".