123310111011 has 16 divisors (see below), whose sum is σ = 170089643424. Its totient is φ = 79401095424.

The previous prime is 123310111009. The next prime is 123310111037. The reversal of 123310111011 is 110111013321.

It is not a de Polignac number, because 123310111011 - 2¹ = 123310111009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123310111061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4039180 + ... + 4069593.

It is an arithmetic number, because the mean of its divisors is an integer number (10630602714).

Almost surely, 2^123310111011 is an apocalyptic number.

123310111011 is a deficient number, since it is larger than the sum of its proper divisors (46779532413).

123310111011 is a wasteful number, since it uses less digits than its factorization.

123310111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8108950.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 123310111011 its reverse (110111013321), we get a palindrome (233421124332).

The spelling of 123310111011 in words is "one hundred twenty-three billion, three hundred ten million, one hundred eleven thousand, eleven".