1311339061 has 2 divisors, whose sum is σ = 1311339062. Its totient is φ = 1311339060.

The previous prime is 1311338989. The next prime is 1311339067. The reversal of 1311339061 is 1609331131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1250966161 + 60372900 = 35369^2 + 7770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311339061 - 2¹⁹ = 1310814773 is a prime.

It is a super-2 number, since 2×1311339061² = 3439220265808723442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311339067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655669530 + 655669531.

It is an arithmetic number, because the mean of its divisors is an integer number (655669531).

Almost surely, 2^1311339061 is an apocalyptic number.

It is an amenable number.

1311339061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311339061 is an equidigital number, since it uses as much as digits as its factorization.

1311339061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1311339061 is about 36212.4158404269. The cubic root of 1311339061 is about 1094.5568735823.

The spelling of 1311339061 in words is "one billion, three hundred eleven million, three hundred thirty-nine thousand, sixty-one".