1243315141 has 16 divisors (see below), whose sum is σ = 1329039360. Its totient is φ = 1159764480.

The previous prime is 1243315127. The next prime is 1243315147. The reversal of 1243315141 is 1415133421.

It is a cyclic number.

It is not a de Polignac number, because 1243315141 - 2⁷ = 1243315013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243315147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328701 + ... + 332461.

It is an arithmetic number, because the mean of its divisors is an integer number (83064960).

Almost surely, 2^1243315141 is an apocalyptic number.

It is an amenable number.

1243315141 is a deficient number, since it is larger than the sum of its proper divisors (85724219).

1243315141 is a wasteful number, since it uses less digits than its factorization.

1243315141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044.

The product of its digits is 1440, while the sum is 25.

The square root of 1243315141 is about 35260.6741427330. The cubic root of 1243315141 is about 1075.2936327138.

Adding to 1243315141 its reverse (1415133421), we get a palindrome (2658448562).

The spelling of 1243315141 in words is "one billion, two hundred forty-three million, three hundred fifteen thousand, one hundred forty-one".