1287048337 has 4 divisors (see below), whose sum is σ = 1287139840. Its totient is φ = 1286956836.

The previous prime is 1287048289. The next prime is 1287048341. The reversal of 1287048337 is 7338407821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1287048337 - 2¹¹ = 1287046289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1287048293 and 1287048302.

It is not an unprimeable number, because it can be changed into a prime (1287088337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19713 + ... + 54430.

It is an arithmetic number, because the mean of its divisors is an integer number (321784960).

Almost surely, 2^1287048337 is an apocalyptic number.

It is an amenable number.

1287048337 is a deficient number, since it is larger than the sum of its proper divisors (91503).

1287048337 is an equidigital number, since it uses as much as digits as its factorization.

1287048337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91502.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 1287048337 is about 35875.4559134793. The cubic root of 1287048337 is about 1087.7563299762.

The spelling of 1287048337 in words is "one billion, two hundred eighty-seven million, forty-eight thousand, three hundred thirty-seven".