1231130232123 has 16 divisors (see below), whose sum is σ = 1896072230016. Its totient is φ = 702248973440.

The previous prime is 1231130232121. The next prime is 1231130232193. The reversal of 1231130232123 is 3212320311321.

It is a cyclic number.

It is not a de Polignac number, because 1231130232123 - 2¹ = 1231130232121 is a prime.

It is a super-2 number, since 2×1231130232123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231130232093 and 1231130232102.

It is not an unprimeable number, because it can be changed into a prime (1231130232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097263461 + ... + 1097264582.

It is an arithmetic number, because the mean of its divisors is an integer number (118504514376).

Almost surely, 2^{1231130232123} is an apocalyptic number.

1231130232123 is a deficient number, since it is larger than the sum of its proper divisors (664941997893).

1231130232123 is a wasteful number, since it uses less digits than its factorization.

1231130232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194528074.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231130232123 its reverse (3212320311321), we get a palindrome (4443450543444).

The spelling of 1231130232123 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, two hundred thirty-two thousand, one hundred twenty-three".