47281319 has 2 divisors, whose sum is σ = 47281320. Its totient is φ = 47281318.

The previous prime is 47281309. The next prime is 47281321. The reversal of 47281319 is 91318274.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47281319 is a prime.

It is a super-2 number, since 2×47281319² = 4471046252759522, which contains 22 as substring.

Together with 47281321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47281309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23640659 + 23640660.

It is an arithmetic number, because the mean of its divisors is an integer number (23640660).

Almost surely, 2^47281319 is an apocalyptic number.

47281319 is a deficient number, since it is larger than the sum of its proper divisors (1).

47281319 is an equidigital number, since it uses as much as digits as its factorization.

47281319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 47281319 is about 6876.1412870883. The cubic root of 47281319 is about 361.6011984348.

The spelling of 47281319 in words is "forty-seven million, two hundred eighty-one thousand, three hundred nineteen".