2142311 has 4 divisors (see below), whose sum is σ = 2163624. Its totient is φ = 2121000.

The previous prime is 2142299. The next prime is 2142341. The reversal of 2142311 is 1132412.

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

It is not a de Polignac number, because 2142311 - 2¹⁴ = 2125927 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 (2142341) 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, 10505 + ... + 10706.

It is an arithmetic number, because the mean of its divisors is an integer number (540906).

2^2142311 is an apocalyptic number.

2142311 is a deficient number, since it is larger than the sum of its proper divisors (21313).

2142311 is a wasteful number, since it uses less digits than its factorization.

2142311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312.

The product of its digits is 48, while the sum is 14.

The square root of 2142311 is about 1463.6635542364. The cubic root of 2142311 is about 128.9122452663.

Adding to 2142311 its reverse (1132412), we get a palindrome (3274723).

The spelling of 2142311 in words is "two million, one hundred forty-two thousand, three hundred eleven".