1311089061 has 8 divisors (see below), whose sum is σ = 1749313024. Its totient is φ = 873462240.

The previous prime is 1311089051. The next prime is 1311089089. The reversal of 1311089061 is 1609801131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311089061 - 2⁶ = 1311088997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311089051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144136 + ... + 152961.

It is an arithmetic number, because the mean of its divisors is an integer number (218664128).

Almost surely, 2^1311089061 is an apocalyptic number.

It is an amenable number.

1311089061 is a deficient number, since it is larger than the sum of its proper divisors (438223963).

1311089061 is a wasteful number, since it uses less digits than its factorization.

1311089061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298571.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1311089061 is about 36208.9638211314. The cubic root of 1311089061 is about 1094.4873119620.

The spelling of 1311089061 in words is "one billion, three hundred eleven million, eighty-nine thousand, sixty-one".