1243301131 has 8 divisors (see below), whose sum is σ = 1262444480. Its totient is φ = 1224243072.

The previous prime is 1243301123. The next prime is 1243301149. The reversal of 1243301131 is 1311033421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243301131 - 2³ = 1243301123 is a prime.

It is a super-2 number, since 2×1243301131² = 3091595404691758322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243301099 and 1243301108.

It is not an unprimeable number, because it can be changed into a prime (1243301161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8371 + ... + 50563.

It is an arithmetic number, because the mean of its divisors is an integer number (157805560).

Almost surely, 2^1243301131 is an apocalyptic number.

1243301131 is a deficient number, since it is larger than the sum of its proper divisors (19143349).

1243301131 is an equidigital number, since it uses as much as digits as its factorization.

1243301131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42645.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1243301131 is about 35260.4754789268. The cubic root of 1243301131 is about 1075.2895938020.

Adding to 1243301131 its reverse (1311033421), we get a palindrome (2554334552).

The spelling of 1243301131 in words is "one billion, two hundred forty-three million, three hundred one thousand, one hundred thirty-one".