103231311123 has 4 divisors (see below), whose sum is σ = 137641748168. Its totient is φ = 68820874080.

The previous prime is 103231311121. The next prime is 103231311143. The reversal of 103231311123 is 321113132301.

It is a happy number.

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

It is not a de Polignac number, because 103231311123 - 2¹ = 103231311121 is a prime.

It is a super-2 number, since 2×103231311123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103231311123.

It is not an unprimeable number, because it can be changed into a prime (103231311121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17205218518 + ... + 17205218523.

It is an arithmetic number, because the mean of its divisors is an integer number (34410437042).

Almost surely, 2^103231311123 is an apocalyptic number.

103231311123 is a deficient number, since it is larger than the sum of its proper divisors (34410437045).

103231311123 is an equidigital number, since it uses as much as digits as its factorization.

103231311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34410437044.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 103231311123 its reverse (321113132301), we get a palindrome (424344443424).

The spelling of 103231311123 in words is "one hundred three billion, two hundred thirty-one million, three hundred eleven thousand, one hundred twenty-three".