1284140323 has 2 divisors, whose sum is σ = 1284140324. Its totient is φ = 1284140322.

The previous prime is 1284140281. The next prime is 1284140353. The reversal of 1284140323 is 3230414821.

It is a strong prime.

It is an emirp because it is prime and its reverse (3230414821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1284140323 - 2⁹ = 1284139811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1284140291 and 1284140300.

It is not a weakly prime, because it can be changed into another prime (1284140353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642070161 + 642070162.

It is an arithmetic number, because the mean of its divisors is an integer number (642070162).

Almost surely, 2^1284140323 is an apocalyptic number.

1284140323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284140323 is an equidigital number, since it uses as much as digits as its factorization.

1284140323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1284140323 is about 35834.9036973730. The cubic root of 1284140323 is about 1086.9364705853.

The spelling of 1284140323 in words is "one billion, two hundred eighty-four million, one hundred forty thousand, three hundred twenty-three".