123445011 has 4 divisors (see below), whose sum is σ = 164593352. Its totient is φ = 82296672.

The previous prime is 123445001. The next prime is 123445037. The reversal of 123445011 is 110544321.

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

It is not a de Polignac number, because 123445011 - 2⁹ = 123444499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123445001) 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, 20574166 + ... + 20574171.

It is an arithmetic number, because the mean of its divisors is an integer number (41148338).

Almost surely, 2^123445011 is an apocalyptic number.

123445011 is a deficient number, since it is larger than the sum of its proper divisors (41148341).

123445011 is an equidigital number, since it uses as much as digits as its factorization.

123445011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41148340.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 123445011 is about 11110.5810379116. The cubic root of 123445011 is about 497.9180241190.

Adding to 123445011 its reverse (110544321), we get a palindrome (233989332).

The spelling of 123445011 in words is "one hundred twenty-three million, four hundred forty-five thousand, eleven".