103231231121 has 4 divisors (see below), whose sum is σ = 103232219700. Its totient is φ = 103230242544.

The previous prime is 103231231111. The next prime is 103231231133. The reversal of 103231231121 is 121132132301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 693584896 + 102537646225 = 26336^2 + 320215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103231231121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103231231093 and 103231231102.

It is not an unprimeable number, because it can be changed into a prime (103231231111) 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, 316286 + ... + 553623.

It is an arithmetic number, because the mean of its divisors is an integer number (25808054925).

Almost surely, 2^103231231121 is an apocalyptic number.

It is an amenable number.

103231231121 is a deficient number, since it is larger than the sum of its proper divisors (988579).

103231231121 is an equidigital number, since it uses as much as digits as its factorization.

103231231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988578.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 103231231121 its reverse (121132132301), we get a palindrome (224363363422).

The spelling of 103231231121 in words is "one hundred three billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty-one".