20313105243 has 8 divisors (see below), whose sum is σ = 27089160000. Its totient is φ = 13539560328.

The previous prime is 20313105233. The next prime is 20313105269. The reversal of 20313105243 is 34250131302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20313105243 - 2⁶ = 20313105179 is a prime.

It is a super-2 number, since 2×20313105243² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20313105223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608493 + ... + 641006.

It is an arithmetic number, because the mean of its divisors is an integer number (3386145000).

Almost surely, 2^20313105243 is an apocalyptic number.

20313105243 is a deficient number, since it is larger than the sum of its proper divisors (6776054757).

20313105243 is a wasteful number, since it uses less digits than its factorization.

20313105243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254921.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20313105243 its reverse (34250131302), we get a palindrome (54563236545).

The spelling of 20313105243 in words is "twenty billion, three hundred thirteen million, one hundred five thousand, two hundred forty-three".