307397 has 2 divisors, whose sum is σ = 307398. Its totient is φ = 307396.

The previous prime is 307381. The next prime is 307399. The reversal of 307397 is 793703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279841 + 27556 = 529^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 307397 - 2⁴ = 307381 is a prime.

Together with 307399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 307397.

It is not a weakly prime, because it can be changed into another prime (307399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153698 + 153699.

It is an arithmetic number, because the mean of its divisors is an integer number (153699).

2³⁰⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

307397 is a deficient number, since it is larger than the sum of its proper divisors (1).

307397 is an equidigital number, since it uses as much as digits as its factorization.

307397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 29.

The square root of 307397 is about 554.4339455697. The cubic root of 307397 is about 67.4890334264.

The spelling of 307397 in words is "three hundred seven thousand, three hundred ninety-seven".