2130997 has 4 divisors (see below), whose sum is σ = 2324736. Its totient is φ = 1937260.

The previous prime is 2130979. The next prime is 2131013. The reversal of 2130997 is 7990312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130997 is a prime.

It is a super-2 number, since 2×2130997² = 9082296428018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2130997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96853 + ... + 96874.

It is an arithmetic number, because the mean of its divisors is an integer number (581184).

2^2130997 is an apocalyptic number.

It is an amenable number.

2130997 is a deficient number, since it is larger than the sum of its proper divisors (193739).

2130997 is a wasteful number, since it uses less digits than its factorization.

2130997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193738.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2130997 is about 1459.7934785441. The cubic root of 2130997 is about 128.6849069269.

The spelling of 2130997 in words is "two million, one hundred thirty thousand, nine hundred ninety-seven".