1311130143 has 12 divisors (see below), whose sum is σ = 1897482600. Its totient is φ = 872412336.

The previous prime is 1311130129. The next prime is 1311130201. The reversal of 1311130143 is 3410311131.

It is not a de Polignac number, because 1311130143 - 2⁴ = 1311130127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311130043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134568 + ... + 143981.

It is an arithmetic number, because the mean of its divisors is an integer number (158123550).

Almost surely, 2^1311130143 is an apocalyptic number.

1311130143 is a deficient number, since it is larger than the sum of its proper divisors (586352457).

1311130143 is a wasteful number, since it uses less digits than its factorization.

1311130143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279078 (or 279075 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1311130143 is about 36209.5311071546. The cubic root of 1311130143 is about 1094.4987434911.

Adding to 1311130143 its reverse (3410311131), we get a palindrome (4721441274).

The spelling of 1311130143 in words is "one billion, three hundred eleven million, one hundred thirty thousand, one hundred forty-three".