224031397 has 2 divisors, whose sum is σ = 224031398. Its totient is φ = 224031396.

The previous prime is 224031383. The next prime is 224031407. The reversal of 224031397 is 793130422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170067681 + 53963716 = 13041^2 + 7346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224031397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224031377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112015698 + 112015699.

It is an arithmetic number, because the mean of its divisors is an integer number (112015699).

Almost surely, 2^224031397 is an apocalyptic number.

It is an amenable number.

224031397 is a deficient number, since it is larger than the sum of its proper divisors (1).

224031397 is an equidigital number, since it uses as much as digits as its factorization.

224031397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 224031397 is about 14967.6784104951. The cubic root of 224031397 is about 607.3461679852.

The spelling of 224031397 in words is "two hundred twenty-four million, thirty-one thousand, three hundred ninety-seven".