287131478047 has 2 divisors, whose sum is σ = 287131478048. Its totient is φ = 287131478046.

The previous prime is 287131478027. The next prime is 287131478057. The reversal of 287131478047 is 740874131782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287131478047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287131477985 and 287131478003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287131478027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143565739023 + 143565739024.

It is an arithmetic number, because the mean of its divisors is an integer number (143565739024).

Almost surely, 2^287131478047 is an apocalyptic number.

287131478047 is a deficient number, since it is larger than the sum of its proper divisors (1).

287131478047 is an equidigital number, since it uses as much as digits as its factorization.

287131478047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 287131478047 in words is "two hundred eighty-seven billion, one hundred thirty-one million, four hundred seventy-eight thousand, forty-seven".