22045231631 has 4 divisors (see below), whose sum is σ = 23205507000. Its totient is φ = 20884956264.

The previous prime is 22045231609. The next prime is 22045231639. The reversal of 22045231631 is 13613254022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22045231631 is a prime.

It is a super-2 number, since 2×22045231631² (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 = 22045231594 and 22045231603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22045231639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580137656 + ... + 580137693.

It is an arithmetic number, because the mean of its divisors is an integer number (5801376750).

Almost surely, 2^22045231631 is an apocalyptic number.

22045231631 is a deficient number, since it is larger than the sum of its proper divisors (1160275369).

22045231631 is a wasteful number, since it uses less digits than its factorization.

22045231631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160275368.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 22045231631 its reverse (13613254022), we get a palindrome (35658485653).

The spelling of 22045231631 in words is "twenty-two billion, forty-five million, two hundred thirty-one thousand, six hundred thirty-one".