1230144287 has 2 divisors, whose sum is σ = 1230144288. Its totient is φ = 1230144286.

The previous prime is 1230144283. The next prime is 1230144343. The reversal of 1230144287 is 7824410321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230144287 - 2² = 1230144283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230144283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615072143 + 615072144.

It is an arithmetic number, because the mean of its divisors is an integer number (615072144).

Almost surely, 2^1230144287 is an apocalyptic number.

1230144287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230144287 is an equidigital number, since it uses as much as digits as its factorization.

1230144287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1230144287 is about 35073.4128222504. The cubic root of 1230144287 is about 1071.4831637292.

The spelling of 1230144287 in words is "one billion, two hundred thirty million, one hundred forty-four thousand, two hundred eighty-seven".