231421741 has 2 divisors, whose sum is σ = 231421742. Its totient is φ = 231421740.

The previous prime is 231421721. The next prime is 231421763. The reversal of 231421741 is 147124132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 45508516 = 13635^2 + 6746^2 .

It is a cyclic number.

It is not a de Polignac number, because 231421741 - 2¹¹ = 231419693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231421721) 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 as a sum of consecutive naturals, namely, 115710870 + 115710871.

It is an arithmetic number, because the mean of its divisors is an integer number (115710871).

Almost surely, 2^231421741 is an apocalyptic number.

It is an amenable number.

231421741 is a deficient number, since it is larger than the sum of its proper divisors (1).

231421741 is an equidigital number, since it uses as much as digits as its factorization.

231421741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 231421741 is about 15212.5520870103. The cubic root of 231421741 is about 613.9524246331.

Adding to 231421741 its reverse (147124132), we get a palindrome (378545873).

The spelling of 231421741 in words is "two hundred thirty-one million, four hundred twenty-one thousand, seven hundred forty-one".