283931261947 has 2 divisors, whose sum is σ = 283931261948. Its totient is φ = 283931261946.

The previous prime is 283931261921. The next prime is 283931261969. The reversal of 283931261947 is 749162139382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-283931261947 is a prime.

It is not a weakly prime, because it can be changed into another prime (283931261917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141965630973 + 141965630974.

It is an arithmetic number, because the mean of its divisors is an integer number (141965630974).

Almost surely, 2^283931261947 is an apocalyptic number.

283931261947 is a deficient number, since it is larger than the sum of its proper divisors (1).

283931261947 is an equidigital number, since it uses as much as digits as its factorization.

283931261947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The spelling of 283931261947 in words is "two hundred eighty-three billion, nine hundred thirty-one million, two hundred sixty-one thousand, nine hundred forty-seven".