1243104313 has 4 divisors (see below), whose sum is σ = 1356113808. Its totient is φ = 1130094820.

The previous prime is 1243104283. The next prime is 1243104319. The reversal of 1243104313 is 3134013421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243104313 - 2²¹ = 1241007161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243104319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56504731 + ... + 56504752.

It is an arithmetic number, because the mean of its divisors is an integer number (339028452).

Almost surely, 2^1243104313 is an apocalyptic number.

It is an amenable number.

1243104313 is a deficient number, since it is larger than the sum of its proper divisors (113009495).

1243104313 is a wasteful number, since it uses less digits than its factorization.

1243104313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113009494.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1243104313 is about 35257.6844531798. The cubic root of 1243104313 is about 1075.2328503711.

Adding to 1243104313 its reverse (3134013421), we get a palindrome (4377117734).

The spelling of 1243104313 in words is "one billion, two hundred forty-three million, one hundred four thousand, three hundred thirteen".