287143028873 has 4 divisors (see below), whose sum is σ = 287144120448. Its totient is φ = 287141937300.

The previous prime is 287143028849. The next prime is 287143028897. The reversal of 287143028873 is 378820341782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (287143028849) and next prime (287143028897).

It is a cyclic number.

It is not a de Polignac number, because 287143028873 - 2⁸ = 287143028617 is a prime.

It is a super-2 number, since 2×287143028873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287143028833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117440 + ... + 766862.

It is an arithmetic number, because the mean of its divisors is an integer number (71786030112).

Almost surely, 2^287143028873 is an apocalyptic number.

It is an amenable number.

287143028873 is a deficient number, since it is larger than the sum of its proper divisors (1091575).

287143028873 is an equidigital number, since it uses as much as digits as its factorization.

287143028873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091574.

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 287143028873 in words is "two hundred eighty-seven billion, one hundred forty-three million, twenty-eight thousand, eight hundred seventy-three".