1180631143 has 2 divisors, whose sum is σ = 1180631144. Its totient is φ = 1180631142.

The previous prime is 1180631131. The next prime is 1180631159. The reversal of 1180631143 is 3411360811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1180631143 - 2¹³ = 1180622951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1180631743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590315571 + 590315572.

It is an arithmetic number, because the mean of its divisors is an integer number (590315572).

Almost surely, 2^1180631143 is an apocalyptic number.

1180631143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180631143 is an equidigital number, since it uses as much as digits as its factorization.

1180631143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1180631143 is about 34360.3134880926. The cubic root of 1180631143 is about 1056.9101735348.

Adding to 1180631143 its reverse (3411360811), we get a palindrome (4591991954).

The spelling of 1180631143 in words is "one billion, one hundred eighty million, six hundred thirty-one thousand, one hundred forty-three".