214311397 has 2 divisors, whose sum is σ = 214311398. Its totient is φ = 214311396.

The previous prime is 214311389. The next prime is 214311457. The reversal of 214311397 is 793113412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212751396 + 1560001 = 14586^2 + 1249^2 .

It is a cyclic number.

It is not a de Polignac number, because 214311397 - 2³ = 214311389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214311347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107155698 + 107155699.

It is an arithmetic number, because the mean of its divisors is an integer number (107155699).

Almost surely, 2^214311397 is an apocalyptic number.

It is an amenable number.

214311397 is a deficient number, since it is larger than the sum of its proper divisors (1).

214311397 is an equidigital number, since it uses as much as digits as its factorization.

214311397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 214311397 is about 14639.3782996410. The cubic root of 214311397 is about 598.4323865843.

The spelling of 214311397 in words is "two hundred fourteen million, three hundred eleven thousand, three hundred ninety-seven".