1231111303232 has 224 divisors, whose sum is σ = 2593015286400. Its totient is φ = 579359047680.

The previous prime is 1231111303181. The next prime is 1231111303243. The reversal of 1231111303232 is 2323031111321.

It is a junction number, because it is equal to n+sod(n) for n = 1231111303198 and 1231111303207.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2076072728 + ... + 2076073320.

It is an arithmetic number, because the mean of its divisors is an integer number (11575961100).

Almost surely, 2^{1231111303232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231111303232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296507643200).

1231111303232 is an abundant number, since it is smaller than the sum of its proper divisors (1361903983168).

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

1231111303232 is a wasteful number, since it uses less digits than its factorization.

1231111303232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1231111303232 its reverse (2323031111321), we get a palindrome (3554142414553).

The spelling of 1231111303232 in words is "one trillion, two hundred thirty-one billion, one hundred eleven million, three hundred three thousand, two hundred thirty-two".