1316643143 has 2 divisors, whose sum is σ = 1316643144. Its totient is φ = 1316643142.

The previous prime is 1316643137. The next prime is 1316643169. The reversal of 1316643143 is 3413466131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3413466131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1316643143 - 2¹⁸ = 1316380999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316643173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658321571 + 658321572.

It is an arithmetic number, because the mean of its divisors is an integer number (658321572).

Almost surely, 2^1316643143 is an apocalyptic number.

1316643143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316643143 is an equidigital number, since it uses as much as digits as its factorization.

1316643143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 1316643143 is about 36285.5776170092. The cubic root of 1316643143 is about 1096.0306367086.

The spelling of 1316643143 in words is "one billion, three hundred sixteen million, six hundred forty-three thousand, one hundred forty-three".