2112431 has 4 divisors (see below), whose sum is σ = 2123352. Its totient is φ = 2101512.

The previous prime is 2112419. The next prime is 2112469. The reversal of 2112431 is 1342112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112431 - 2¹⁰ = 2111407 is a prime.

It is a super-2 number, since 2×2112431² = 8924729459522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112631) 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, 5165 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (530838).

2^2112431 is an apocalyptic number.

2112431 is a deficient number, since it is larger than the sum of its proper divisors (10921).

2112431 is a wasteful number, since it uses less digits than its factorization.

2112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

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

The square root of 2112431 is about 1453.4204484594. The cubic root of 2112431 is about 128.3101001775.

Adding to 2112431 its reverse (1342112), we get a palindrome (3454543).

The spelling of 2112431 in words is "two million, one hundred twelve thousand, four hundred thirty-one".