20123123210131 has 8 divisors (see below), whose sum is σ = 20350173382560. Its totient is φ = 19896094097088.

The previous prime is 20123123210089. The next prime is 20123123210137. The reversal of 20123123210131 is 13101232132102.

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

It is a cyclic number.

It is not a de Polignac number, because 20123123210131 - 2⁹ = 20123123209619 is a prime.

It is a super-2 number, since 2×20123123210131² (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 (20123123210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3339031 + ... + 7169056.

It is an arithmetic number, because the mean of its divisors is an integer number (2543771672820).

Almost surely, 2^{20123123210131} is an apocalyptic number.

20123123210131 is a deficient number, since it is larger than the sum of its proper divisors (227050172429).

20123123210131 is a wasteful number, since it uses less digits than its factorization.

20123123210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10529693.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20123123210131 its reverse (13101232132102), we get a palindrome (33224355342233).

The spelling of 20123123210131 in words is "twenty trillion, one hundred twenty-three billion, one hundred twenty-three million, two hundred ten thousand, one hundred thirty-one".