2131207 has 8 divisors (see below), whose sum is σ = 2328480. Its totient is φ = 1938720.

The previous prime is 2131193. The next prime is 2131223. The reversal of 2131207 is 7021312.

It is a happy number.

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-2131207 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 (2131247) 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 7 ways as a sum of consecutive naturals, for example, 232 + ... + 2077.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

2^2131207 is an apocalyptic number.

2131207 is a deficient number, since it is larger than the sum of its proper divisors (197273).

2131207 is a wasteful number, since it uses less digits than its factorization.

2131207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2131207 is about 1459.8654047548. The cubic root of 2131207 is about 128.6891338909.

Adding to 2131207 its reverse (7021312), we get a palindrome (9152519).

The spelling of 2131207 in words is "two million, one hundred thirty-one thousand, two hundred seven".