1231103311232 has 32 divisors (see below), whose sum is σ = 2452873494720. Its totient is φ = 615480159744.

The previous prime is 1231103311213. The next prime is 1231103311241. The reversal of 1231103311232 is 2321133011321.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1231103311198 and 1231103311207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556433 + ... + 1664879.

It is an arithmetic number, because the mean of its divisors is an integer number (76652296710).

Almost surely, 2^{1231103311232} is an apocalyptic number.

It is an amenable number.

1231103311232 is a deficient number, since it is larger than the sum of its proper divisors (1221770183488).

1231103311232 is an equidigital number, since it uses as much as digits as its factorization.

1231103311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117138 (or 1117126 counting only the distinct ones).

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

Adding to 1231103311232 its reverse (2321133011321), we get a palindrome (3552236322553).

The spelling of 1231103311232 in words is "one trillion, two hundred thirty-one billion, one hundred three million, three hundred eleven thousand, two hundred thirty-two".