1313042389 has 2 divisors, whose sum is σ = 1313042390. Its totient is φ = 1313042388.

The previous prime is 1313042383. The next prime is 1313042407. The reversal of 1313042389 is 9832403131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1227941764 + 85100625 = 35042^2 + 9225^2 .

It is an emirp because it is prime and its reverse (9832403131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313042389 - 2¹¹ = 1313040341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313042383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656521194 + 656521195.

It is an arithmetic number, because the mean of its divisors is an integer number (656521195).

Almost surely, 2^1313042389 is an apocalyptic number.

It is an amenable number.

1313042389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313042389 is an equidigital number, since it uses as much as digits as its factorization.

1313042389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1313042389 is about 36235.9267716447. The cubic root of 1313042389 is about 1095.0305834400.

The spelling of 1313042389 in words is "one billion, three hundred thirteen million, forty-two thousand, three hundred eighty-nine".