2131367 has 4 divisors (see below), whose sum is σ = 2435856. Its totient is φ = 1826880.

The previous prime is 2131361. The next prime is 2131373. The reversal of 2131367 is 7631312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2131361) and next prime (2131373).

It is a cyclic number.

It is not a de Polignac number, because 2131367 - 2¹⁰ = 2130343 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 (2131361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152234 + ... + 152247.

It is an arithmetic number, because the mean of its divisors is an integer number (608964).

2^2131367 is an apocalyptic number.

2131367 is a deficient number, since it is larger than the sum of its proper divisors (304489).

2131367 is an equidigital number, since it uses as much as digits as its factorization.

2131367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304488.

The product of its digits is 756, while the sum is 23.

The square root of 2131367 is about 1459.9202032988. The cubic root of 2131367 is about 128.6923542486.

Adding to 2131367 its reverse (7631312), we get a palindrome (9762679).

Subtracting 2131367 from its reverse (7631312), we obtain a palindrome (5499945).

The spelling of 2131367 in words is "two million, one hundred thirty-one thousand, three hundred sixty-seven".