2311031030123 has 4 divisors (see below), whose sum is σ = 2311038311760. Its totient is φ = 2311023748488.

The previous prime is 2311031030093. The next prime is 2311031030137. The reversal of 2311031030123 is 3210301301132.

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-2311031030123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311031030095 and 2311031030104.

It is not an unprimeable number, because it can be changed into a prime (2311031030183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141968 + ... + 3807101.

It is an arithmetic number, because the mean of its divisors is an integer number (577759577940).

Almost surely, 2^{2311031030123} is an apocalyptic number.

2311031030123 is a deficient number, since it is larger than the sum of its proper divisors (7281637).

2311031030123 is an equidigital number, since it uses as much as digits as its factorization.

2311031030123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7281636.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 2311031030123 its reverse (3210301301132), we get a palindrome (5521332331255).

The spelling of 2311031030123 in words is "two trillion, three hundred eleven billion, thirty-one million, thirty thousand, one hundred twenty-three".