1236342313 has 4 divisors (see below), whose sum is σ = 1248583428. Its totient is φ = 1224101200.

The previous prime is 1236342287. The next prime is 1236342361. The reversal of 1236342313 is 3132436321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 995844249 + 240498064 = 31557^2 + 15508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1236342313 - 2⁵ = 1236342281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1236342113) 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 3 ways as a sum of consecutive naturals, for example, 6120406 + ... + 6120607.

It is an arithmetic number, because the mean of its divisors is an integer number (312145857).

Almost surely, 2^1236342313 is an apocalyptic number.

It is an amenable number.

1236342313 is a deficient number, since it is larger than the sum of its proper divisors (12241115).

1236342313 is a wasteful number, since it uses less digits than its factorization.

1236342313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241114.

The product of its digits is 7776, while the sum is 28.

The square root of 1236342313 is about 35161.6597020107. The cubic root of 1236342313 is about 1073.2796895784.

Adding to 1236342313 its reverse (3132436321), we get a palindrome (4368778634).

It can be divided in two parts, 123 and 6342313, that added together give a palindrome (6342436).

The spelling of 1236342313 in words is "one billion, two hundred thirty-six million, three hundred forty-two thousand, three hundred thirteen".