281238047 has 2 divisors, whose sum is σ = 281238048. Its totient is φ = 281238046.

The previous prime is 281238037. The next prime is 281238059. The reversal of 281238047 is 740832182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281238047 - 2¹² = 281233951 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 281237998 and 281238016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281238037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140619023 + 140619024.

It is an arithmetic number, because the mean of its divisors is an integer number (140619024).

Almost surely, 2^281238047 is an apocalyptic number.

281238047 is a deficient number, since it is larger than the sum of its proper divisors (1).

281238047 is an equidigital number, since it uses as much as digits as its factorization.

281238047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 281238047 is about 16770.1534578548. The cubic root of 281238047 is about 655.1760667254.

It can be divided in two parts, 281 and 238047, that added together give a cube (238328 = 62³).

The spelling of 281238047 in words is "two hundred eighty-one million, two hundred thirty-eight thousand, forty-seven".