287142997 has 2 divisors, whose sum is σ = 287142998. Its totient is φ = 287142996.

The previous prime is 287142943. The next prime is 287143013. The reversal of 287142997 is 799241782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243172836 + 43970161 = 15594^2 + 6631^2 .

It is a cyclic number.

It is not a de Polignac number, because 287142997 - 2¹¹ = 287140949 is a prime.

It is a super-2 number, since 2×287142997² = 164902201452284018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 287142997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287142917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143571498 + 143571499.

It is an arithmetic number, because the mean of its divisors is an integer number (143571499).

Almost surely, 2^287142997 is an apocalyptic number.

It is an amenable number.

287142997 is a deficient number, since it is larger than the sum of its proper divisors (1).

287142997 is an equidigital number, since it uses as much as digits as its factorization.

287142997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 287142997 is about 16945.2942435356. The cubic root of 287142997 is about 659.7297615723.

The spelling of 287142997 in words is "two hundred eighty-seven million, one hundred forty-two thousand, nine hundred ninety-seven".