1287713351 has 8 divisors (see below), whose sum is σ = 1360711680. Its totient is φ = 1216132632.

The previous prime is 1287713311. The next prime is 1287713381. The reversal of 1287713351 is 1533177821.

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

It is a cyclic number.

It is not a de Polignac number, because 1287713351 - 2²² = 1283519047 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 (1287713311) 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, 352535 + ... + 356168.

It is an arithmetic number, because the mean of its divisors is an integer number (170088960).

Almost surely, 2^1287713351 is an apocalyptic number.

1287713351 is a deficient number, since it is larger than the sum of its proper divisors (72998329).

1287713351 is an equidigital number, since it uses as much as digits as its factorization.

1287713351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708805.

The product of its digits is 35280, while the sum is 38.

The square root of 1287713351 is about 35884.7230865726. The cubic root of 1287713351 is about 1087.9436445250.

The spelling of 1287713351 in words is "one billion, two hundred eighty-seven million, seven hundred thirteen thousand, three hundred fifty-one".