1320131143 has 2 divisors, whose sum is σ = 1320131144. Its totient is φ = 1320131142.

The previous prime is 1320131123. The next prime is 1320131171. The reversal of 1320131143 is 3411310231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320131143 - 2²¹ = 1318033991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320131143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320131123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660065571 + 660065572.

It is an arithmetic number, because the mean of its divisors is an integer number (660065572).

Almost surely, 2^1320131143 is an apocalyptic number.

1320131143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320131143 is an equidigital number, since it uses as much as digits as its factorization.

1320131143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1320131143 is about 36333.6090004833. The cubic root of 1320131143 is about 1096.9976372626.

Adding to 1320131143 its reverse (3411310231), we get a palindrome (4731441374).

It can be divided in two parts, 13201 and 31143, that added together give a palindrome (44344).

The spelling of 1320131143 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, one hundred forty-three".