1311421044 has 48 divisors (see below), whose sum is σ = 3154325888. Its totient is φ = 423750528.

The previous prime is 1311421043. The next prime is 1311421063. The reversal of 1311421044 is 4401241131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311421044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311421043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117657 + ... + 128319.

Almost surely, 2^1311421044 is an apocalyptic number.

It is an amenable number.

1311421044 is an abundant number, since it is smaller than the sum of its proper divisors (1842904844).

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

1311421044 is a wasteful number, since it uses less digits than its factorization.

1311421044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10984 (or 10982 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1311421044 is about 36213.5477963704. The cubic root of 1311421044 is about 1094.5796831385.

Adding to 1311421044 its reverse (4401241131), we get a palindrome (5712662175).

The spelling of 1311421044 in words is "one billion, three hundred eleven million, four hundred twenty-one thousand, forty-four".