45131443631 has 4 divisors (see below), whose sum is σ = 45131873832. Its totient is φ = 45131013432.

The previous prime is 45131443543. The next prime is 45131443649. The reversal of 45131443631 is 13634413154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45131443631 is a prime.

It is a super-2 number, since 2×45131443631² (a number of 22 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 = 45131443591 and 45131443600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131449631) 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 3 ways as a sum of consecutive naturals, for example, 56981 + ... + 305793.

It is an arithmetic number, because the mean of its divisors is an integer number (11282968458).

Almost surely, 2^45131443631 is an apocalyptic number.

45131443631 is a deficient number, since it is larger than the sum of its proper divisors (430201).

45131443631 is a wasteful number, since it uses less digits than its factorization.

45131443631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430200.

The product of its digits is 51840, while the sum is 35.

Adding to 45131443631 its reverse (13634413154), we get a palindrome (58765856785).

The spelling of 45131443631 in words is "forty-five billion, one hundred thirty-one million, four hundred forty-three thousand, six hundred thirty-one".