1087331 has 4 divisors (see below), whose sum is σ = 1242672. Its totient is φ = 931992.

The previous prime is 1087309. The next prime is 1087349. The reversal of 1087331 is 1337801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1087331 - 2¹⁰ = 1086307 is a prime.

It is a super-2 number, since 2×1087331² = 2364577407122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1087297 and 1087306.

It is not an unprimeable number, because it can be changed into a prime (1087301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77660 + ... + 77673.

It is an arithmetic number, because the mean of its divisors is an integer number (310668).

2^1087331 is an apocalyptic number.

1087331 is a deficient number, since it is larger than the sum of its proper divisors (155341).

1087331 is an equidigital number, since it uses as much as digits as its factorization.

1087331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155340.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1087331 is about 1042.7516482845. The cubic root of 1087331 is about 102.8301785763.

The spelling of 1087331 in words is "one million, eighty-seven thousand, three hundred thirty-one".