2231631641 has 2 divisors, whose sum is σ = 2231631642. Its totient is φ = 2231631640.

The previous prime is 2231631617. The next prime is 2231631659. The reversal of 2231631641 is 1461361322.

2231631641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1639926016 + 591705625 = 40496^2 + 24325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231631641 - 2¹⁴ = 2231615257 is a prime.

It is a super-3 number, since 3×2231631641³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2231631671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115815820 + 1115815821.

It is an arithmetic number, because the mean of its divisors is an integer number (1115815821).

Almost surely, 2^2231631641 is an apocalyptic number.

It is an amenable number.

2231631641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231631641 is an equidigital number, since it uses as much as digits as its factorization.

2231631641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 2231631641 is about 47240.1486132294. The cubic root of 2231631641 is about 1306.7951183578.

Adding to 2231631641 its reverse (1461361322), we get a palindrome (3692992963).

The spelling of 2231631641 in words is "two billion, two hundred thirty-one million, six hundred thirty-one thousand, six hundred forty-one".