1313011044 has 18 divisors (see below), whose sum is σ = 3319000230. Its totient is φ = 437670336.

The previous prime is 1313011043. The next prime is 1313011067. The reversal of 1313011044 is 4401103131.

It can be written as a sum of positive squares in only one way, i.e., 754161444 + 558849600 = 27462^2 + 23640^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (1313011043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18236229 + ... + 18236300.

Almost surely, 2^1313011044 is an apocalyptic number.

It is an amenable number.

1313011044 is an abundant number, since it is smaller than the sum of its proper divisors (2005989186).

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

1313011044 is a wasteful number, since it uses less digits than its factorization.

1313011044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36472539 (or 36472534 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1313011044 is about 36235.4942563228. The cubic root of 1313011044 is about 1095.0218698328.

Adding to 1313011044 its reverse (4401103131), we get a palindrome (5714114175).

The spelling of 1313011044 in words is "one billion, three hundred thirteen million, eleven thousand, forty-four".