1285311063 has 16 divisors (see below), whose sum is σ = 1722629376. Its totient is φ = 852445440.

The previous prime is 1285311043. The next prime is 1285311127. The reversal of 1285311063 is 3601135821.

It is not a de Polignac number, because 1285311063 - 2²⁰ = 1284262487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1285311063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285311043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636231 + ... + 638247.

It is an arithmetic number, because the mean of its divisors is an integer number (107664336).

Almost surely, 2^1285311063 is an apocalyptic number.

1285311063 is a deficient number, since it is larger than the sum of its proper divisors (437318313).

1285311063 is a wasteful number, since it uses less digits than its factorization.

1285311063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1285311063 is about 35851.2351670065. The cubic root of 1285311063 is about 1087.2666872190.

Adding to 1285311063 its reverse (3601135821), we get a palindrome (4886446884).

The spelling of 1285311063 in words is "one billion, two hundred eighty-five million, three hundred eleven thousand, sixty-three".