287425231 has 2 divisors, whose sum is σ = 287425232. Its totient is φ = 287425230.

The previous prime is 287425199. The next prime is 287425241. The reversal of 287425231 is 132524782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 287425231 - 2⁵ = 287425199 is a prime.

It is a super-2 number, since 2×287425231² = 165226526830806722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287425241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143712615 + 143712616.

It is an arithmetic number, because the mean of its divisors is an integer number (143712616).

Almost surely, 2^287425231 is an apocalyptic number.

287425231 is a deficient number, since it is larger than the sum of its proper divisors (1).

287425231 is an equidigital number, since it uses as much as digits as its factorization.

287425231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 287425231 is about 16953.6199969210. The cubic root of 287425231 is about 659.9458411329.

The spelling of 287425231 in words is "two hundred eighty-seven million, four hundred twenty-five thousand, two hundred thirty-one".