20113255313 has 4 divisors (see below), whose sum is σ = 20114736180. Its totient is φ = 20111774448.

The previous prime is 20113255249. The next prime is 20113255319. The reversal of 20113255313 is 31355231102.

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 18880683649 + 1232571664 = 137407^2 + 35108^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113255313 - 2⁶ = 20113255249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113255319) 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, 719870 + ... + 747287.

It is an arithmetic number, because the mean of its divisors is an integer number (5028684045).

Almost surely, 2^20113255313 is an apocalyptic number.

It is an amenable number.

20113255313 is a deficient number, since it is larger than the sum of its proper divisors (1480867).

20113255313 is a wasteful number, since it uses less digits than its factorization.

20113255313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480866.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 20113255313 its reverse (31355231102), we get a palindrome (51468486415).

The spelling of 20113255313 in words is "twenty billion, one hundred thirteen million, two hundred fifty-five thousand, three hundred thirteen".