240123023011 has 4 divisors (see below), whose sum is σ = 240977553624. Its totient is φ = 239268492400.

The previous prime is 240123023003. The next prime is 240123023027. The reversal of 240123023011 is 110320321042.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 240123023011 - 2³ = 240123023003 is a prime.

It is a super-2 number, since 2×240123023011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240123023011.

It is not an unprimeable number, because it can be changed into a prime (240123023071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427264885 + ... + 427265446.

It is an arithmetic number, because the mean of its divisors is an integer number (60244388406).

Almost surely, 2^240123023011 is an apocalyptic number.

240123023011 is a deficient number, since it is larger than the sum of its proper divisors (854530613).

240123023011 is an equidigital number, since it uses as much as digits as its factorization.

240123023011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854530612.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 240123023011 its reverse (110320321042), we get a palindrome (350443344053).

The spelling of 240123023011 in words is "two hundred forty billion, one hundred twenty-three million, twenty-three thousand, eleven".