12042611631 has 8 divisors (see below), whose sum is σ = 17840906160. Its totient is φ = 8028407736.

The previous prime is 12042611629. The next prime is 12042611671. The reversal of 12042611631 is 13611624021.

It is a happy number.

12042611631 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 26 + 1 + 1 + 631 = 666.

It is not a de Polignac number, because 12042611631 - 2¹ = 12042611629 is a prime.

It is a super-2 number, since 2×12042611631² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 446022653 = 12042611631 / (1 + 2 + 0 + 4 + 2 + 6 + 1 + 1 + 6 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 12042611595 and 12042611604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042611671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223011300 + ... + 223011353.

It is an arithmetic number, because the mean of its divisors is an integer number (2230113270).

Almost surely, 2^12042611631 is an apocalyptic number.

12042611631 is a deficient number, since it is larger than the sum of its proper divisors (5798294529).

12042611631 is an equidigital number, since it uses as much as digits as its factorization.

12042611631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446022662 (or 446022656 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 12042611631 in words is "twelve billion, forty-two million, six hundred eleven thousand, six hundred thirty-one".