281320423 has 2 divisors, whose sum is σ = 281320424. Its totient is φ = 281320422.

The previous prime is 281320421. The next prime is 281320433. The reversal of 281320423 is 324023182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281320423 - 2¹ = 281320421 is a prime.

Together with 281320421, 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 (281320421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140660211 + 140660212.

It is an arithmetic number, because the mean of its divisors is an integer number (140660212).

Almost surely, 2^281320423 is an apocalyptic number.

281320423 is a deficient number, since it is larger than the sum of its proper divisors (1).

281320423 is an equidigital number, since it uses as much as digits as its factorization.

281320423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 281320423 is about 16772.6093080355. The cubic root of 281320423 is about 655.2400285727.

The spelling of 281320423 in words is "two hundred eighty-one million, three hundred twenty thousand, four hundred twenty-three".