1312058081 has 4 divisors (see below), whose sum is σ = 1312218564. Its totient is φ = 1311897600.

The previous prime is 1312058071. The next prime is 1312058087. The reversal of 1312058081 is 1808502131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13104400 + 1298953681 = 3620^2 + 36041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312058081 is a prime.

It is a super-2 number, since 2×1312058081² = 3442992815834805122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312058087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67280 + ... + 84561.

It is an arithmetic number, because the mean of its divisors is an integer number (328054641).

Almost surely, 2^1312058081 is an apocalyptic number.

It is an amenable number.

1312058081 is a deficient number, since it is larger than the sum of its proper divisors (160483).

1312058081 is an equidigital number, since it uses as much as digits as its factorization.

1312058081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160482.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1312058081 is about 36222.3422903600. The cubic root of 1312058081 is about 1094.7568891005.

The spelling of 1312058081 in words is "one billion, three hundred twelve million, fifty-eight thousand, eighty-one".