97212331 has 2 divisors, whose sum is σ = 97212332. Its totient is φ = 97212330.

The previous prime is 97212301. The next prime is 97212337. The reversal of 97212331 is 13321279.

It is a strong prime.

It is an emirp because it is prime and its reverse (13321279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97212331 - 2⁵ = 97212299 is a prime.

It is a super-2 number, since 2×97212331² = 18900474596907122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97212331.

It is not a weakly prime, because it can be changed into another prime (97212337) 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, 48606165 + 48606166.

It is an arithmetic number, because the mean of its divisors is an integer number (48606166).

Almost surely, 2^97212331 is an apocalyptic number.

97212331 is a deficient number, since it is larger than the sum of its proper divisors (1).

97212331 is an equidigital number, since it uses as much as digits as its factorization.

97212331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 97212331 is about 9859.6313825619. The cubic root of 97212331 is about 459.8051017449.

The spelling of 97212331 in words is "ninety-seven million, two hundred twelve thousand, three hundred thirty-one".