1271344143 has 4 divisors (see below), whose sum is σ = 1695125528. Its totient is φ = 847562760.

The previous prime is 1271344121. The next prime is 1271344153. The reversal of 1271344143 is 3414431721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3414431721 = 3 ⋅1138143907.

It is not a de Polignac number, because 1271344143 - 2⁵ = 1271344111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1271344143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271344153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211890688 + ... + 211890693.

It is an arithmetic number, because the mean of its divisors is an integer number (423781382).

Almost surely, 2^1271344143 is an apocalyptic number.

1271344143 is a deficient number, since it is larger than the sum of its proper divisors (423781385).

1271344143 is an equidigital number, since it uses as much as digits as its factorization.

1271344143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423781384.

The product of its digits is 8064, while the sum is 30.

The square root of 1271344143 is about 35655.9131561653. The cubic root of 1271344143 is about 1083.3140494766.

Adding to 1271344143 its reverse (3414431721), we get a palindrome (4685775864).

The spelling of 1271344143 in words is "one billion, two hundred seventy-one million, three hundred forty-four thousand, one hundred forty-three".