12400110231 has 4 divisors (see below), whose sum is σ = 16533480312. Its totient is φ = 8266740152.

The previous prime is 12400110227. The next prime is 12400110253. The reversal of 12400110231 is 13201100421.

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 12400110231 - 2² = 12400110227 is a prime.

It is a super-2 number, since 2×12400110231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12400110231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400110271) 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, 2066685036 + ... + 2066685041.

It is an arithmetic number, because the mean of its divisors is an integer number (4133370078).

Almost surely, 2^12400110231 is an apocalyptic number.

12400110231 is a deficient number, since it is larger than the sum of its proper divisors (4133370081).

12400110231 is an equidigital number, since it uses as much as digits as its factorization.

12400110231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133370080.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12400110231 its reverse (13201100421), we get a palindrome (25601210652).

The spelling of 12400110231 in words is "twelve billion, four hundred million, one hundred ten thousand, two hundred thirty-one".