1231111303233 has 32 divisors (see below), whose sum is σ = 1889154681600. Its totient is φ = 698557167360.

The previous prime is 1231111303181. The next prime is 1231111303243. The reversal of 1231111303233 is 3323031111321.

It is not a de Polignac number, because 1231111303233 - 2⁸ = 1231111302977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231111303243) 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, 4986523 + ... + 5227583.

It is an arithmetic number, because the mean of its divisors is an integer number (59036083800).

Almost surely, 2^{1231111303233} is an apocalyptic number.

It is an amenable number.

1231111303233 is a deficient number, since it is larger than the sum of its proper divisors (658043378367).

1231111303233 is a wasteful number, since it uses less digits than its factorization.

1231111303233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242777.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1231111303233 its reverse (3323031111321), we get a palindrome (4554142414554).

The spelling of 1231111303233 in words is "one trillion, two hundred thirty-one billion, one hundred eleven million, three hundred three thousand, two hundred thirty-three".