1310287 has 8 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 1139160.

The previous prime is 1310279. The next prime is 1310293. The reversal of 1310287 is 7820131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1310287 - 2³ = 1310279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2^1310287 is an apocalyptic number.

1310287 is a deficient number, since it is larger than the sum of its proper divisors (181553).

1310287 is a wasteful number, since it uses less digits than its factorization.

1310287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1310287 is about 1144.6776838918. The cubic root of 1310287 is about 109.4264081600.

The spelling of 1310287 in words is "one million, three hundred ten thousand, two hundred eighty-seven".