11400420231 has 18 divisors (see below), whose sum is σ = 17054702600. Its totient is φ = 7338196656.

The previous prime is 11400420211. The next prime is 11400420301. The reversal of 11400420231 is 13202400411.

11400420231 is a `hidden beast` number, since 1 + 14 + 0 + 0 + 420 + 231 = 666.

11400420231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11400420231 - 2⁷ = 11400420103 is a prime.

It is a super-2 number, since 2×11400420231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400420211) 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 17 ways as a sum of consecutive naturals, for example, 745531 + ... + 760668.

Almost surely, 2^11400420231 is an apocalyptic number.

11400420231 is a deficient number, since it is larger than the sum of its proper divisors (5654282369).

11400420231 is a wasteful number, since it uses less digits than its factorization.

11400420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506263 (or 1506231 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11400420231 its reverse (13202400411), we get a palindrome (24602820642).

The spelling of 11400420231 in words is "eleven billion, four hundred million, four hundred twenty thousand, two hundred thirty-one".