12400234131 has 32 divisors (see below), whose sum is σ = 17306890240. Its totient is φ = 7890120576.

The previous prime is 12400234127. The next prime is 12400234181. The reversal of 12400234131 is 13143200421.

12400234131 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 12400234131 - 2² = 12400234127 is a prime.

It is a super-2 number, since 2×12400234131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12400234098 and 12400234107.

It is not an unprimeable number, because it can be changed into a prime (12400234181) 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 31 ways as a sum of consecutive naturals, for example, 1372230 + ... + 1381236.

It is an arithmetic number, because the mean of its divisors is an integer number (540840320).

Almost surely, 2^12400234131 is an apocalyptic number.

12400234131 is a deficient number, since it is larger than the sum of its proper divisors (4906656109).

12400234131 is a wasteful number, since it uses less digits than its factorization.

12400234131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12400234131 its reverse (13143200421), we get a palindrome (25543434552).

The spelling of 12400234131 in words is "twelve billion, four hundred million, two hundred thirty-four thousand, one hundred thirty-one".