123000445311 has 16 divisors (see below), whose sum is σ = 166692990816. Its totient is φ = 80660123136.

The previous prime is 123000445277. The next prime is 123000445313. The reversal of 123000445311 is 113544000321.

It is a happy number.

It is not a de Polignac number, because 123000445311 - 2²³ = 122992056703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000445313) 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 15 ways as a sum of consecutive naturals, for example, 671190 + ... + 834563.

It is an arithmetic number, because the mean of its divisors is an integer number (10418311926).

Almost surely, 2^123000445311 is an apocalyptic number.

123000445311 is a deficient number, since it is larger than the sum of its proper divisors (43692545505).

123000445311 is a wasteful number, since it uses less digits than its factorization.

123000445311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506202.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 123000445311 its reverse (113544000321), we get a palindrome (236544445632).

The spelling of 123000445311 in words is "one hundred twenty-three billion, four hundred forty-five thousand, three hundred eleven".