97811071 has 2 divisors, whose sum is σ = 97811072. Its totient is φ = 97811070.

The previous prime is 97811059. The next prime is 97811099. The reversal of 97811071 is 17011879.

It is a weak prime.

It is an emirp because it is prime and its reverse (17011879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97811071 - 2⁵ = 97811039 is a prime.

It is a super-2 number, since 2×97811071² = 19134011220334082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97851071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48905535 + 48905536.

It is an arithmetic number, because the mean of its divisors is an integer number (48905536).

Almost surely, 2^97811071 is an apocalyptic number.

97811071 is a deficient number, since it is larger than the sum of its proper divisors (1).

97811071 is an equidigital number, since it uses as much as digits as its factorization.

97811071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 97811071 is about 9889.9479776185. The cubic root of 97811071 is about 460.7471647617.

The spelling of 97811071 in words is "ninety-seven million, eight hundred eleven thousand, seventy-one".