1087591131 has 40 divisors (see below), whose sum is σ = 1813652544. Its totient is φ = 643794480.

The previous prime is 1087591117. The next prime is 1087591151. The reversal of 1087591131 is 1311957801.

It is not a de Polignac number, because 1087591131 - 2⁹ = 1087590619 is a prime.

It is a super-2 number, since 2×1087591131² = 2365708936459718322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1087591151) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24120 + ... + 52506.

Almost surely, 2^1087591131 is an apocalyptic number.

1087591131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1087591131 is a deficient number, since it is larger than the sum of its proper divisors (726061413).

1087591131 is a wasteful number, since it uses less digits than its factorization.

1087591131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28453 (or 28444 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 36.

The square root of 1087591131 is about 32978.6465913930. The cubic root of 1087591131 is about 1028.3837822125.

The spelling of 1087591131 in words is "one billion, eighty-seven million, five hundred ninety-one thousand, one hundred thirty-one".