1314738221 has 2 divisors, whose sum is σ = 1314738222. Its totient is φ = 1314738220.

The previous prime is 1314738209. The next prime is 1314738281. The reversal of 1314738221 is 1228374131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809118025 + 505620196 = 28445^2 + 22486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1314738221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1314738281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657369110 + 657369111.

It is an arithmetic number, because the mean of its divisors is an integer number (657369111).

Almost surely, 2^1314738221 is an apocalyptic number.

It is an amenable number.

1314738221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1314738221 is an equidigital number, since it uses as much as digits as its factorization.

1314738221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 1314738221 is about 36259.3190917866. The cubic root of 1314738221 is about 1095.5018017956.

The spelling of 1314738221 in words is "one billion, three hundred fourteen million, seven hundred thirty-eight thousand, two hundred twenty-one".