12455423031 has 32 divisors (see below), whose sum is σ = 17794667520. Its totient is φ = 7721865216.

The previous prime is 12455423023. The next prime is 12455423033. The reversal of 12455423031 is 13032455421.

It is not a de Polignac number, because 12455423031 - 2³ = 12455423023 is a prime.

It is a super-2 number, since 2×12455423031² (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 12455423031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455423033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3654130 + ... + 3657536.

It is an arithmetic number, because the mean of its divisors is an integer number (556083360).

Almost surely, 2^12455423031 is an apocalyptic number.

12455423031 is a deficient number, since it is larger than the sum of its proper divisors (5339244489).

12455423031 is a wasteful number, since it uses less digits than its factorization.

12455423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 12455423031 its reverse (13032455421), we get a palindrome (25487878452).

The spelling of 12455423031 in words is "twelve billion, four hundred fifty-five million, four hundred twenty-three thousand, thirty-one".