1123102431012 has 24 divisors (see below), whose sum is σ = 2632015892800. Its totient is φ = 372732683616.

The previous prime is 1123102430999. The next prime is 1123102431013. The reversal of 1123102431012 is 2101342013211.

It is a super-2 number, since 2×1123102431012² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123102431012.

It is not an unprimeable number, because it can be changed into a prime (1123102431013) 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, 204346312 + ... + 204351807.

Almost surely, 2^{1123102431012} is an apocalyptic number.

1123102431012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123102431012 is an abundant number, since it is smaller than the sum of its proper divisors (1508913461788).

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

1123102431012 is a wasteful number, since it uses less digits than its factorization.

1123102431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408698355 (or 408698353 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1123102431012 its reverse (2101342013211), we get a palindrome (3224444444223).

The spelling of 1123102431012 in words is "one trillion, one hundred twenty-three billion, one hundred two million, four hundred thirty-one thousand, twelve".