1123231031320 has 128 divisors (see below), whose sum is σ = 2573774274240. Its totient is φ = 441116262400.

The previous prime is 1123231031309. The next prime is 1123231031327. The reversal of 1123231031320 is 231301323211.

It is a junction number, because it is equal to n+sod(n) for n = 1123231031291 and 1123231031300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123231031327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241916919 + ... + 241921561.

Almost surely, 2^{1123231031320} is an apocalyptic number.

1123231031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123231031320 is an abundant number, since it is smaller than the sum of its proper divisors (1450543242920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123231031320 is a wasteful number, since it uses less digits than its factorization.

1123231031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245 (or 5241 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1123231031320 its reverse (231301323211), we get a palindrome (1354532354531).

The spelling of 1123231031320 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, thirty-one thousand, three hundred twenty".