1311160287 has 16 divisors (see below), whose sum is σ = 1831345920. Its totient is φ = 832837632.

The previous prime is 1311160247. The next prime is 1311160289. The reversal of 1311160287 is 7820611131.

It is not a de Polignac number, because 1311160287 - 2⁸ = 1311160031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311160289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19237 + ... + 54702.

It is an arithmetic number, because the mean of its divisors is an integer number (114459120).

Almost surely, 2^1311160287 is an apocalyptic number.

1311160287 is a deficient number, since it is larger than the sum of its proper divisors (520185633).

1311160287 is a wasteful number, since it uses less digits than its factorization.

1311160287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74222.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1311160287 is about 36209.9473487604. The cubic root of 1311160287 is about 1094.5071312466.

The spelling of 1311160287 in words is "one billion, three hundred eleven million, one hundred sixty thousand, two hundred eighty-seven".