1087158531 has 32 divisors (see below), whose sum is σ = 1520958208. Its totient is φ = 690042240.

The previous prime is 1087158529. The next prime is 1087158539. The reversal of 1087158531 is 1358517801.

It is a happy number.

It is not a de Polignac number, because 1087158531 - 2¹ = 1087158529 is a prime.

It is a super-2 number, since 2×1087158531² = 2363827343052155922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1087158531.

It is not an unprimeable number, because it can be changed into a prime (1087158539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2078436 + ... + 2078958.

It is an arithmetic number, because the mean of its divisors is an integer number (47529944).

Almost surely, 2^1087158531 is an apocalyptic number.

1087158531 is a deficient number, since it is larger than the sum of its proper divisors (433799677).

1087158531 is a wasteful number, since it uses less digits than its factorization.

1087158531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 33600, while the sum is 39.

The square root of 1087158531 is about 32972.0871495876. The cubic root of 1087158531 is about 1028.2474142308.

The spelling of 1087158531 in words is "one billion, eighty-seven million, one hundred fifty-eight thousand, five hundred thirty-one".