20123200320131 has 4 divisors (see below), whose sum is σ = 20130634087272. Its totient is φ = 20115766552992.

The previous prime is 20123200320109. The next prime is 20123200320199. The reversal of 20123200320131 is 13102300232102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20123200320131 - 2¹⁰ = 20123200319107 is a prime.

It is a super-2 number, since 2×20123200320131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123205320131) 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, 3716879510 + ... + 3716884923.

It is an arithmetic number, because the mean of its divisors is an integer number (5032658521818).

Almost surely, 2^{20123200320131} is an apocalyptic number.

20123200320131 is a deficient number, since it is larger than the sum of its proper divisors (7433767141).

20123200320131 is an equidigital number, since it uses as much as digits as its factorization.

20123200320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433767140.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20123200320131 its reverse (13102300232102), we get a palindrome (33225500552233).

The spelling of 20123200320131 in words is "twenty trillion, one hundred twenty-three billion, two hundred million, three hundred twenty thousand, one hundred thirty-one".