1311011046 has 24 divisors (see below), whose sum is σ = 2843592024. Its totient is φ = 436531680.

The previous prime is 1311011003. The next prime is 1311011069. The reversal of 1311011046 is 6401101131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22000 + ... + 55731.

It is an arithmetic number, because the mean of its divisors is an integer number (118483001).

Almost surely, 2^1311011046 is an apocalyptic number.

1311011046 is an abundant number, since it is smaller than the sum of its proper divisors (1532580978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311011046 is a wasteful number, since it uses less digits than its factorization.

1311011046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78676 (or 78673 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1311011046 is about 36207.8865166140. The cubic root of 1311011046 is about 1094.4656027525.

Adding to 1311011046 its reverse (6401101131), we get a palindrome (7712112177).

The spelling of 1311011046 in words is "one billion, three hundred eleven million, eleven thousand, forty-six".