12285438631 has 4 divisors (see below), whose sum is σ = 12286077064. Its totient is φ = 12284800200.

The previous prime is 12285438611. The next prime is 12285438673. The reversal of 12285438631 is 13683458221.

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 12285438631 - 2²⁷ = 12151220903 is a prime.

It is a super-2 number, since 2×12285438631² (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 (12285438611) 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, 289425 + ... + 329146.

It is an arithmetic number, because the mean of its divisors is an integer number (3071519266).

Almost surely, 2^12285438631 is an apocalyptic number.

12285438631 is a deficient number, since it is larger than the sum of its proper divisors (638433).

12285438631 is an equidigital number, since it uses as much as digits as its factorization.

12285438631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638432.

The product of its digits is 276480, while the sum is 43.

The spelling of 12285438631 in words is "twelve billion, two hundred eighty-five million, four hundred thirty-eight thousand, six hundred thirty-one".