312301397 has 2 divisors, whose sum is σ = 312301398. Its totient is φ = 312301396.

The previous prime is 312301321. The next prime is 312301399. The reversal of 312301397 is 793103213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264843076 + 47458321 = 16274^2 + 6889^2 .

It is a cyclic number.

It is not a de Polignac number, because 312301397 - 2¹² = 312297301 is a prime.

Together with 312301399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312301399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156150698 + 156150699.

It is an arithmetic number, because the mean of its divisors is an integer number (156150699).

Almost surely, 2^312301397 is an apocalyptic number.

It is an amenable number.

312301397 is a deficient number, since it is larger than the sum of its proper divisors (1).

312301397 is an equidigital number, since it uses as much as digits as its factorization.

312301397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 312301397 is about 17672.0512957608. The cubic root of 312301397 is about 678.4606159554.

The spelling of 312301397 in words is "three hundred twelve million, three hundred one thousand, three hundred ninety-seven".