103031320123 has 4 divisors (see below), whose sum is σ = 103214324808. Its totient is φ = 102848315440.

The previous prime is 103031320103. The next prime is 103031320129. The reversal of 103031320123 is 321023130301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321023130301 = 3863 ⋅83102027.

It is a cyclic number.

It is not a de Polignac number, because 103031320123 - 2²¹ = 103029222971 is a prime.

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 103031320123.

It is not an unprimeable number, because it can be changed into a prime (103031320129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91501498 + ... + 91502623.

It is an arithmetic number, because the mean of its divisors is an integer number (25803581202).

Almost surely, 2^103031320123 is an apocalyptic number.

103031320123 is a deficient number, since it is larger than the sum of its proper divisors (183004685).

103031320123 is an equidigital number, since it uses as much as digits as its factorization.

103031320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183004684.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 103031320123 its reverse (321023130301), we get a palindrome (424054450424).

The spelling of 103031320123 in words is "one hundred three billion, thirty-one million, three hundred twenty thousand, one hundred twenty-three".