1235440453313 has 4 divisors (see below), whose sum is σ = 1347753221808. Its totient is φ = 1123127684820.

The previous prime is 1235440453309. The next prime is 1235440453361. The reversal of 1235440453313 is 3133540445321.

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 1235440453313 - 2² = 1235440453309 is a prime.

It is a super-2 number, since 2×1235440453313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235440453363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56156384231 + ... + 56156384252.

It is an arithmetic number, because the mean of its divisors is an integer number (336938305452).

Almost surely, 2^{1235440453313} is an apocalyptic number.

It is an amenable number.

1235440453313 is a deficient number, since it is larger than the sum of its proper divisors (112312768495).

1235440453313 is a wasteful number, since it uses less digits than its factorization.

1235440453313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112312768494.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 1235440453313 its reverse (3133540445321), we get a palindrome (4368980898634).

The spelling of 1235440453313 in words is "one trillion, two hundred thirty-five billion, four hundred forty million, four hundred fifty-three thousand, three hundred thirteen".