1235724724313 has 4 divisors (see below), whose sum is σ = 1236465124260. Its totient is φ = 1234984324368.

The previous prime is 1235724724309. The next prime is 1235724724319. The reversal of 1235724724313 is 3134274275321.

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 981866955664 + 253857768649 = 990892^2 + 503843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235724724313 - 2² = 1235724724309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235724724319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370197470 + ... + 370200807.

It is an arithmetic number, because the mean of its divisors is an integer number (309116281065).

Almost surely, 2^{1235724724313} is an apocalyptic number.

It is an amenable number.

1235724724313 is a deficient number, since it is larger than the sum of its proper divisors (740399947).

1235724724313 is an equidigital number, since it uses as much as digits as its factorization.

1235724724313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740399946.

The product of its digits is 846720, while the sum is 44.

Adding to 1235724724313 its reverse (3134274275321), we get a palindrome (4369998999634).

The spelling of 1235724724313 in words is "one trillion, two hundred thirty-five billion, seven hundred twenty-four million, seven hundred twenty-four thousand, three hundred thirteen".