2131087 has 8 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 1814712.

The previous prime is 2131081. The next prime is 2131093. The reversal of 2131087 is 7801312.

It is an interprime number because it is at equal distance from previous prime (2131081) and next prime (2131093).

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

It is a cyclic number.

It is not a de Polignac number, because 2131087 - 2⁷ = 2130959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131081) 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, 258 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (306432).

2^2131087 is an apocalyptic number.

2131087 is a deficient number, since it is larger than the sum of its proper divisors (320369).

2131087 is a wasteful number, since it uses less digits than its factorization.

2131087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997.

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

The square root of 2131087 is about 1459.8243044969. The cubic root of 2131087 is about 128.6867185169.

Adding to 2131087 its reverse (7801312), we get a palindrome (9932399).

The spelling of 2131087 in words is "two million, one hundred thirty-one thousand, eighty-seven".