2131005 has 8 divisors (see below), whose sum is σ = 3409632. Its totient is φ = 1136528.

The previous prime is 2130979. The next prime is 2131013. The reversal of 2131005 is 5001312.

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 2131005 - 2⁹ = 2130493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71019 + ... + 71048.

It is an arithmetic number, because the mean of its divisors is an integer number (426204).

2^2131005 is an apocalyptic number.

It is an amenable number.

2131005 is a deficient number, since it is larger than the sum of its proper divisors (1278627).

2131005 is a wasteful number, since it uses less digits than its factorization.

2131005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142075.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 2131005 is about 1459.7962186552. The cubic root of 2131005 is about 128.6850679592.

Adding to 2131005 its reverse (5001312), we get a palindrome (7132317).

The spelling of 2131005 in words is "two million, one hundred thirty-one thousand, five".