1231087 has 8 divisors (see below), whose sum is σ = 1446480. Its totient is φ = 1032960.

The previous prime is 1231073. The next prime is 1231091. The reversal of 1231087 is 7801321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4162 + ... + 4447.

It is an arithmetic number, because the mean of its divisors is an integer number (180810).

2^1231087 is an apocalyptic number.

1231087 is a deficient number, since it is larger than the sum of its proper divisors (215393).

1231087 is a wasteful number, since it uses less digits than its factorization.

1231087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1231087 is about 1109.5435998644. The cubic root of 1231087 is about 107.1756801871.

The spelling of 1231087 in words is "one million, two hundred thirty-one thousand, eighty-seven".