20312001130123 has 4 divisors (see below), whose sum is σ = 20312010258880. Its totient is φ = 20311992001368.

The previous prime is 20312001130103. The next prime is 20312001130153. The reversal of 20312001130123 is 32103110021302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20312001130123 - 2²¹ = 20311999032971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20312001130123.

It is not an unprimeable number, because it can be changed into a prime (20312001130103) 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, 1198918 + ... + 6485476.

It is an arithmetic number, because the mean of its divisors is an integer number (5078002564720).

Almost surely, 2^{20312001130123} is an apocalyptic number.

20312001130123 is a deficient number, since it is larger than the sum of its proper divisors (9128757).

20312001130123 is an equidigital number, since it uses as much as digits as its factorization.

20312001130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128756.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20312001130123 its reverse (32103110021302), we get a palindrome (52415111151425).

The spelling of 20312001130123 in words is "twenty trillion, three hundred twelve billion, one million, one hundred thirty thousand, one hundred twenty-three".