123303131011 has 4 divisors (see below), whose sum is σ = 123467317024. Its totient is φ = 123138945000.

The previous prime is 123303130991. The next prime is 123303131023. The reversal of 123303131011 is 110131303321.

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

It is a cyclic number.

It is not a de Polignac number, because 123303131011 - 2⁷ = 123303130883 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 123303131011.

It is not an unprimeable number, because it can be changed into a prime (123303131411) 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, 82091880 + ... + 82093381.

It is an arithmetic number, because the mean of its divisors is an integer number (30866829256).

Almost surely, 2^123303131011 is an apocalyptic number.

123303131011 is a deficient number, since it is larger than the sum of its proper divisors (164186013).

123303131011 is an equidigital number, since it uses as much as digits as its factorization.

123303131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164186012.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 123303131011 its reverse (110131303321), we get a palindrome (233434434332).

The spelling of 123303131011 in words is "one hundred twenty-three billion, three hundred three million, one hundred thirty-one thousand, eleven".