12401345331 has 6 divisors (see below), whose sum is σ = 17913054380. Its totient is φ = 8267563548.

The previous prime is 12401345309. The next prime is 12401345357. The reversal of 12401345331 is 13354310421.

It is a happy number.

12401345331 is a `hidden beast` number, since 124 + 0 + 1 + 3 + 4 + 533 + 1 = 666.

12401345331 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 12401345331 - 2¹⁵ = 12401312563 is a prime.

It is a super-2 number, since 2×12401345331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12401345295 and 12401345304.

It is not an unprimeable number, because it can be changed into a prime (12401345381) 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 5 ways as a sum of consecutive naturals, for example, 688963621 + ... + 688963638.

Almost surely, 2^12401345331 is an apocalyptic number.

12401345331 is a deficient number, since it is larger than the sum of its proper divisors (5511709049).

12401345331 is a wasteful number, since it uses less digits than its factorization.

12401345331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377927265 (or 1377927262 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 12401345331 its reverse (13354310421), we get a palindrome (25755655752).

The spelling of 12401345331 in words is "twelve billion, four hundred one million, three hundred forty-five thousand, three hundred thirty-one".