1131231130123 has 16 divisors (see below), whose sum is σ = 1156033806336. Its totient is φ = 1106716322880.

The previous prime is 1131231130109. The next prime is 1131231130157. The reversal of 1131231130123 is 3210311321311.

It is a cyclic number.

It is not a de Polignac number, because 1131231130123 - 2³⁷ = 993792176651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131231130094 and 1131231130103.

It is not an unprimeable number, because it can be changed into a prime (1131231131123) 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, 4364790 + ... + 4616692.

It is an arithmetic number, because the mean of its divisors is an integer number (72252112896).

Almost surely, 2^{1131231130123} is an apocalyptic number.

1131231130123 is a deficient number, since it is larger than the sum of its proper divisors (24802676213).

1131231130123 is a wasteful number, since it uses less digits than its factorization.

1131231130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252474.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1131231130123 its reverse (3210311321311), we get a palindrome (4341542451434).

The spelling of 1131231130123 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred thirty thousand, one hundred twenty-three".