224143397 has 2 divisors, whose sum is σ = 224143398. Its totient is φ = 224143396.

The previous prime is 224143331. The next prime is 224143411. The reversal of 224143397 is 793341422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175059361 + 49084036 = 13231^2 + 7006^2 .

It is a cyclic number.

It is not a de Polignac number, because 224143397 - 2²⁰ = 223094821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224143327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112071698 + 112071699.

It is an arithmetic number, because the mean of its divisors is an integer number (112071699).

Almost surely, 2^224143397 is an apocalyptic number.

It is an amenable number.

224143397 is a deficient number, since it is larger than the sum of its proper divisors (1).

224143397 is an equidigital number, since it uses as much as digits as its factorization.

224143397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 224143397 is about 14971.4193381924. The cubic root of 224143397 is about 607.4473612991.

The spelling of 224143397 in words is "two hundred twenty-four million, one hundred forty-three thousand, three hundred ninety-seven".