1123231011312 has 40 divisors (see below), whose sum is σ = 3054400120960. Its totient is φ = 354704529600.

The previous prime is 1123231011277. The next prime is 1123231011313. The reversal of 1123231011312 is 2131101323211.

It is a super-2 number, since 2×1123231011312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123231011313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615805564 + ... + 615807387.

It is an arithmetic number, because the mean of its divisors is an integer number (76360003024).

Almost surely, 2^{1123231011312} is an apocalyptic number.

1123231011312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123231011312 is an abundant number, since it is smaller than the sum of its proper divisors (1931169109648).

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

1123231011312 is a wasteful number, since it uses less digits than its factorization.

1123231011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231612981 (or 1231612975 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1123231011312 its reverse (2131101323211), we get a palindrome (3254332334523).

The spelling of 1123231011312 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, eleven thousand, three hundred twelve".