123456011 has 8 divisors (see below), whose sum is σ = 141315840. Its totient is φ = 105652008.

The previous prime is 123456001. The next prime is 123456017. The reversal of 123456011 is 110654321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123456011 - 2¹⁸ = 123193867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123456017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9101 + ... + 18158.

It is an arithmetic number, because the mean of its divisors is an integer number (17664480).

Almost surely, 2^123456011 is an apocalyptic number.

123456011 is a deficient number, since it is larger than the sum of its proper divisors (17859829).

123456011 is an equidigital number, since it uses as much as digits as its factorization.

123456011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27913.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 123456011 is about 11111.0760505002. The cubic root of 123456011 is about 497.9328132561.

The spelling of 123456011 in words is "one hundred twenty-three million, four hundred fifty-six thousand, eleven".