1315444143 has 16 divisors (see below), whose sum is σ = 1890094976. Its totient is φ = 808967520.

The previous prime is 1315444127. The next prime is 1315444183. The reversal of 1315444143 is 3414445131.

It is not a de Polignac number, because 1315444143 - 2⁴ = 1315444127 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 1315444143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315444183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53088 + ... + 73818.

It is an arithmetic number, because the mean of its divisors is an integer number (118130936).

Almost surely, 2^1315444143 is an apocalyptic number.

1315444143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1315444143 is a deficient number, since it is larger than the sum of its proper divisors (574650833).

1315444143 is a wasteful number, since it uses less digits than its factorization.

1315444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22374.

The product of its digits is 11520, while the sum is 30.

The square root of 1315444143 is about 36269.0521381522. The cubic root of 1315444143 is about 1095.6978358660.

Adding to 1315444143 its reverse (3414445131), we get a palindrome (4729889274).

The spelling of 1315444143 in words is "one billion, three hundred fifteen million, four hundred forty-four thousand, one hundred forty-three".