22031087 has 8 divisors (see below), whose sum is σ = 24060960. Its totient is φ = 20049120.

The previous prime is 22031077. The next prime is 22031123. The reversal of 22031087 is 78013022.

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

It is a de Polignac number, because none of the positive numbers 2^k-22031087 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 (22031017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11012 + ... + 12857.

It is an arithmetic number, because the mean of its divisors is an integer number (3007620).

Almost surely, 2^22031087 is an apocalyptic number.

22031087 is a deficient number, since it is larger than the sum of its proper divisors (2029873).

22031087 is a wasteful number, since it uses less digits than its factorization.

22031087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23953.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 22031087 is about 4693.7284753168. The cubic root of 22031087 is about 280.3358512476.

The spelling of 22031087 in words is "twenty-two million, thirty-one thousand, eighty-seven".