20120103120231 has 8 divisors (see below), whose sum is σ = 29807560178160. Its totient is φ = 13413402080136.

The previous prime is 20120103120223. The next prime is 20120103120281. The reversal of 20120103120231 is 13202130102102.

20120103120231 is a `hidden beast` number, since 2 + 0 + 120 + 1 + 0 + 312 + 0 + 231 = 666.

It is not a de Polignac number, because 20120103120231 - 2³ = 20120103120223 is a prime.

It is a super-2 number, since 2×20120103120231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120103120281) 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, 372594502200 + ... + 372594502253.

It is an arithmetic number, because the mean of its divisors is an integer number (3725945022270).

Almost surely, 2^{20120103120231} is an apocalyptic number.

20120103120231 is a deficient number, since it is larger than the sum of its proper divisors (9687457057929).

20120103120231 is an equidigital number, since it uses as much as digits as its factorization.

20120103120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745189004462 (or 745189004456 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20120103120231 its reverse (13202130102102), we get a palindrome (33322233222333).

The spelling of 20120103120231 in words is "twenty trillion, one hundred twenty billion, one hundred three million, one hundred twenty thousand, two hundred thirty-one".