1341023209 has 2 divisors, whose sum is σ = 1341023210. Its totient is φ = 1341023208.

The previous prime is 1341023197. The next prime is 1341023231. The reversal of 1341023209 is 9023201431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279635984 + 61387225 = 35772^2 + 7835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1341023209 - 2¹⁹ = 1340498921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1341023269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670511604 + 670511605.

It is an arithmetic number, because the mean of its divisors is an integer number (670511605).

Almost surely, 2^1341023209 is an apocalyptic number.

It is an amenable number.

1341023209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341023209 is an equidigital number, since it uses as much as digits as its factorization.

1341023209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1341023209 is about 36619.9837383907. The cubic root of 1341023209 is about 1102.7543122662.

The spelling of 1341023209 in words is "one billion, three hundred forty-one million, twenty-three thousand, two hundred nine".