1031310987 has 12 divisors (see below), whose sum is σ = 1599584616. Its totient is φ = 589320480.

The previous prime is 1031310949. The next prime is 1031311009. The reversal of 1031310987 is 7890131301.

It is not a de Polignac number, because 1031310987 - 2¹⁰ = 1031309963 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1031110987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3507714 + ... + 3508007.

It is an arithmetic number, because the mean of its divisors is an integer number (133298718).

Almost surely, 2^1031310987 is an apocalyptic number.

1031310987 is a deficient number, since it is larger than the sum of its proper divisors (568273629).

1031310987 is an equidigital number, since it uses as much as digits as its factorization.

1031310987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7015738 (or 7015731 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 1031310987 is about 32114.0309989263. The cubic root of 1031310987 is about 1010.3299209735.

The spelling of 1031310987 in words is "one billion, thirty-one million, three hundred ten thousand, nine hundred eighty-seven".