1311143004 has 48 divisors (see below), whose sum is σ = 3418091040. Its totient is φ = 434626560.

The previous prime is 1311142997. The next prime is 1311143023. The reversal of 1311143004 is 4003411131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13989 + ... + 53084.

It is an arithmetic number, because the mean of its divisors is an integer number (71210230).

Almost surely, 2^1311143004 is an apocalyptic number.

It is an amenable number.

1311143004 is an abundant number, since it is smaller than the sum of its proper divisors (2106948036).

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

1311143004 is a wasteful number, since it uses less digits than its factorization.

1311143004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67267 (or 67259 counting only the distinct ones).

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

The square root of 1311143004 is about 36209.7086980826. The cubic root of 1311143004 is about 1094.5023221600.

Adding to 1311143004 its reverse (4003411131), we get a palindrome (5314554135).

The spelling of 1311143004 in words is "one billion, three hundred eleven million, one hundred forty-three thousand, four".