231849481 has 2 divisors, whose sum is σ = 231849482. Its totient is φ = 231849480.

The previous prime is 231849479. The next prime is 231849487. The reversal of 231849481 is 184948132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206899456 + 24950025 = 14384^2 + 4995^2 .

It is a cyclic number.

It is not a de Polignac number, because 231849481 - 2¹ = 231849479 is a prime.

It is a super-2 number, since 2×231849481² = 107508363679938722, which contains 22 as substring.

Together with 231849479, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231849487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115924740 + 115924741.

It is an arithmetic number, because the mean of its divisors is an integer number (115924741).

Almost surely, 2^231849481 is an apocalyptic number.

It is an amenable number.

231849481 is a deficient number, since it is larger than the sum of its proper divisors (1).

231849481 is an equidigital number, since it uses as much as digits as its factorization.

231849481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 231849481 is about 15226.6043818049. The cubic root of 231849481 is about 614.3304507402.

The spelling of 231849481 in words is "two hundred thirty-one million, eight hundred forty-nine thousand, four hundred eighty-one".