231461641 has 2 divisors, whose sum is σ = 231461642. Its totient is φ = 231461640.

The previous prime is 231461639. The next prime is 231461669. The reversal of 231461641 is 146164132.

It is an a-pointer prime, because the next prime (231461669) can be obtained adding 231461641 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225600400 + 5861241 = 15020^2 + 2421^2 .

It is a cyclic number.

It is not a de Polignac number, because 231461641 - 2¹ = 231461639 is a prime.

Together with 231461639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231467641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115730820 + 115730821.

It is an arithmetic number, because the mean of its divisors is an integer number (115730821).

Almost surely, 2^231461641 is an apocalyptic number.

It is an amenable number.

231461641 is a deficient number, since it is larger than the sum of its proper divisors (1).

231461641 is an equidigital number, since it uses as much as digits as its factorization.

231461641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 231461641 is about 15213.8634475271. The cubic root of 231461641 is about 613.9877069621.

The spelling of 231461641 in words is "two hundred thirty-one million, four hundred sixty-one thousand, six hundred forty-one".