1316991041 has 2 divisors, whose sum is σ = 1316991042. Its totient is φ = 1316991040.

The previous prime is 1316990993. The next prime is 1316991059. The reversal of 1316991041 is 1401996131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 897601600 + 419389441 = 29960^2 + 20479^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316991041 - 2¹⁴ = 1316974657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1316990992 and 1316991010.

It is not a weakly prime, because it can be changed into another prime (1316991341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658495520 + 658495521.

It is an arithmetic number, because the mean of its divisors is an integer number (658495521).

Almost surely, 2^1316991041 is an apocalyptic number.

It is an amenable number.

1316991041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316991041 is an equidigital number, since it uses as much as digits as its factorization.

1316991041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1316991041 is about 36290.3711885122. The cubic root of 1316991041 is about 1096.1271633160.

The spelling of 1316991041 in words is "one billion, three hundred sixteen million, nine hundred ninety-one thousand, forty-one".