1287013203 has 48 divisors (see below), whose sum is σ = 2368005120. Its totient is φ = 655734528.

The previous prime is 1287013201. The next prime is 1287013207. The reversal of 1287013203 is 3023107821.

It is not a de Polignac number, because 1287013203 - 2¹ = 1287013201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1287013201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11275 + ... + 51972.

It is an arithmetic number, because the mean of its divisors is an integer number (49333440).

Almost surely, 2^1287013203 is an apocalyptic number.

1287013203 is a deficient number, since it is larger than the sum of its proper divisors (1080991917).

1287013203 is a wasteful number, since it uses less digits than its factorization.

1287013203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63296 (or 63293 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1287013203 is about 35874.9662438866. The cubic root of 1287013203 is about 1087.7464319852.

The spelling of 1287013203 in words is "one billion, two hundred eighty-seven million, thirteen thousand, two hundred three".