1283215287 has 16 divisors (see below), whose sum is σ = 1846909440. Its totient is φ = 790064352.

The previous prime is 1283215237. The next prime is 1283215319. The reversal of 1283215287 is 7825123821.

It is not a de Polignac number, because 1283215287 - 2⁶ = 1283215223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283215207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318643 + ... + 322644.

It is an arithmetic number, because the mean of its divisors is an integer number (115431840).

Almost surely, 2^1283215287 is an apocalyptic number.

1283215287 is a deficient number, since it is larger than the sum of its proper divisors (563694153).

1283215287 is a wasteful number, since it uses less digits than its factorization.

1283215287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641342.

The product of its digits is 53760, while the sum is 39.

The square root of 1283215287 is about 35821.9944587121. The cubic root of 1283215287 is about 1086.6754147719.

The spelling of 1283215287 in words is "one billion, two hundred eighty-three million, two hundred fifteen thousand, two hundred eighty-seven".