12351631441 has 4 divisors (see below), whose sum is σ = 12362572900. Its totient is φ = 12340689984.

The previous prime is 12351631427. The next prime is 12351631447. The reversal of 12351631441 is 14413615321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3238065216 + 9113566225 = 56904^2 + 95465^2 .

It is a cyclic number.

It is not a de Polignac number, because 12351631441 - 2¹¹ = 12351629393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12351631447) 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, 5469036 + ... + 5471293.

It is an arithmetic number, because the mean of its divisors is an integer number (3090643225).

Almost surely, 2^12351631441 is an apocalyptic number.

It is an amenable number.

12351631441 is a deficient number, since it is larger than the sum of its proper divisors (10941459).

12351631441 is a wasteful number, since it uses less digits than its factorization.

12351631441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10941458.

The product of its digits is 8640, while the sum is 31.

The spelling of 12351631441 in words is "twelve billion, three hundred fifty-one million, six hundred thirty-one thousand, four hundred forty-one".