12261003631 has 8 divisors (see below), whose sum is σ = 12288317184. Its totient is φ = 12233711640.

The previous prime is 12261003611. The next prime is 12261003683. The reversal of 12261003631 is 13630016221.

12261003631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12261003631 - 2¹⁵ = 12260970863 is a prime.

It is a super-2 number, since 2×12261003631² (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 = 12261003596 and 12261003605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261003611) 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 7 ways as a sum of consecutive naturals, for example, 1688250 + ... + 1695496.

It is an arithmetic number, because the mean of its divisors is an integer number (1536039648).

Almost surely, 2^12261003631 is an apocalyptic number.

12261003631 is a deficient number, since it is larger than the sum of its proper divisors (27313553).

12261003631 is an equidigital number, since it uses as much as digits as its factorization.

12261003631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10781.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12261003631 its reverse (13630016221), we get a palindrome (25891019852).

The spelling of 12261003631 in words is "twelve billion, two hundred sixty-one million, three thousand, six hundred thirty-one".