1299971341 has 2 divisors, whose sum is σ = 1299971342. Its totient is φ = 1299971340.

The previous prime is 1299971327. The next prime is 1299971377. The reversal of 1299971341 is 1431799921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299242025 + 729316 = 36045^2 + 854^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299971341 - 2⁷ = 1299971213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1299971291 and 1299971300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299971311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649985670 + 649985671.

It is an arithmetic number, because the mean of its divisors is an integer number (649985671).

Almost surely, 2^1299971341 is an apocalyptic number.

It is an amenable number.

1299971341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299971341 is an equidigital number, since it uses as much as digits as its factorization.

1299971341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 46.

The square root of 1299971341 is about 36055.1153236264. The cubic root of 1299971341 is about 1091.3848629435.

The spelling of 1299971341 in words is "one billion, two hundred ninety-nine million, nine hundred seventy-one thousand, three hundred forty-one".