1233531231103 has 4 divisors (see below), whose sum is σ = 1237025654208. Its totient is φ = 1230036808000.

The previous prime is 1233531231089. The next prime is 1233531231139. The reversal of 1233531231103 is 3011321353321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233531231103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233531231143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747211023 + ... + 1747211728.

It is an arithmetic number, because the mean of its divisors is an integer number (309256413552).

Almost surely, 2^{1233531231103} is an apocalyptic number.

1233531231103 is a deficient number, since it is larger than the sum of its proper divisors (3494423105).

1233531231103 is an equidigital number, since it uses as much as digits as its factorization.

1233531231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494423104.

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 1233531231103 its reverse (3011321353321), we get a palindrome (4244852584424).

The spelling of 1233531231103 in words is "one trillion, two hundred thirty-three billion, five hundred thirty-one million, two hundred thirty-one thousand, one hundred three".