20123132331023 has 16 divisors (see below), whose sum is σ = 21566031459840. Its totient is φ = 18727587353376.

The previous prime is 20123132331019. The next prime is 20123132331067. The reversal of 20123132331023 is 32013323132102.

It is a cyclic number.

It is not a de Polignac number, because 20123132331023 - 2² = 20123132331019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123132330983 and 20123132331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123132334023) 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, 43630286 + ... + 44089092.

It is an arithmetic number, because the mean of its divisors is an integer number (1347876966240).

Almost surely, 2^{20123132331023} is an apocalyptic number.

20123132331023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20123132331023 is a deficient number, since it is larger than the sum of its proper divisors (1442899128817).

20123132331023 is a wasteful number, since it uses less digits than its factorization.

20123132331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510406.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20123132331023 its reverse (32013323132102), we get a palindrome (52136455463125).

The spelling of 20123132331023 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-two million, three hundred thirty-one thousand, twenty-three".