20310651120243 has 16 divisors (see below), whose sum is σ = 29546087717376. Its totient is φ = 12308101172640.

The previous prime is 20310651120191. The next prime is 20310651120317. The reversal of 20310651120243 is 34202115601302.

It is not a de Polignac number, because 20310651120243 - 2⁸ = 20310651119987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20310651120243.

It is not an unprimeable number, because it can be changed into a prime (20310651125243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34310955 + ... + 34897892.

It is an arithmetic number, because the mean of its divisors is an integer number (1846630482336).

Almost surely, 2^{20310651120243} is an apocalyptic number.

20310651120243 is a deficient number, since it is larger than the sum of its proper divisors (9235436597133).

20310651120243 is a wasteful number, since it uses less digits than its factorization.

20310651120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69217754.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 20310651120243 its reverse (34202115601302), we get a palindrome (54512766721545).

The spelling of 20310651120243 in words is "twenty trillion, three hundred ten billion, six hundred fifty-one million, one hundred twenty thousand, two hundred forty-three".