97313261 has 2 divisors, whose sum is σ = 97313262. Its totient is φ = 97313260.

The previous prime is 97313201. The next prime is 97313273. The reversal of 97313261 is 16231379.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96157636 + 1155625 = 9806^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 97313261 - 2²⁶ = 30204397 is a prime.

It is a super-4 number, since 4×97313261⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97313201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48656630 + 48656631.

It is an arithmetic number, because the mean of its divisors is an integer number (48656631).

Almost surely, 2^97313261 is an apocalyptic number.

It is an amenable number.

97313261 is a deficient number, since it is larger than the sum of its proper divisors (1).

97313261 is an equidigital number, since it uses as much as digits as its factorization.

97313261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 97313261 is about 9864.7484002381. The cubic root of 97313261 is about 459.9641764793.

The spelling of 97313261 in words is "ninety-seven million, three hundred thirteen thousand, two hundred sixty-one".