1310311143 has 12 divisors (see below), whose sum is σ = 1916630560. Its totient is φ = 862482816.

The previous prime is 1310311141. The next prime is 1310311151. The reversal of 1310311143 is 3411130131.

1310311143 is a `hidden beast` number, since 1 + 310 + 311 + 1 + 43 = 666.

1310311143 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1310311143 - 2¹ = 1310311141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310311141) 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, 920746 + ... + 922167.

Almost surely, 2^1310311143 is an apocalyptic number.

1310311143 is a deficient number, since it is larger than the sum of its proper divisors (606319417).

1310311143 is a wasteful number, since it uses less digits than its factorization.

1310311143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842998 (or 1842995 counting only the distinct ones).

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

The square root of 1310311143 is about 36198.2201634279. The cubic root of 1310311143 is about 1094.2708024319.

Adding to 1310311143 its reverse (3411130131), we get a palindrome (4721441274).

The spelling of 1310311143 in words is "one billion, three hundred ten million, three hundred eleven thousand, one hundred forty-three".