4231632661 has 2 divisors, whose sum is σ = 4231632662. Its totient is φ = 4231632660.

The previous prime is 4231632659. The next prime is 4231632677. The reversal of 4231632661 is 1662361324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3522422500 + 709210161 = 59350^2 + 26631^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231632661 - 2¹ = 4231632659 is a prime.

Together with 4231632659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4231632961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115816330 + 2115816331.

It is an arithmetic number, because the mean of its divisors is an integer number (2115816331).

Almost surely, 2^4231632661 is an apocalyptic number.

It is an amenable number.

4231632661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231632661 is an equidigital number, since it uses as much as digits as its factorization.

4231632661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 4231632661 is about 65051.0004611766. Note that the first 3 decimals coincide. The cubic root of 4231632661 is about 1617.4690781594.

Adding to 4231632661 its reverse (1662361324), we get a palindrome (5893993985).

The spelling of 4231632661 in words is "four billion, two hundred thirty-one million, six hundred thirty-two thousand, six hundred sixty-one".