2162431 has 4 divisors (see below), whose sum is σ = 2172352. Its totient is φ = 2152512.

The previous prime is 2162401. The next prime is 2162441. The reversal of 2162431 is 1342612.

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 2162431 - 2⁹ = 2161919 is a prime.

It is a super-2 number, since 2×2162431² = 9352215659522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2162399 and 2162408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162401) 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, 4626 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (543088).

2^2162431 is an apocalyptic number.

2162431 is a deficient number, since it is larger than the sum of its proper divisors (9921).

2162431 is an equidigital number, since it uses as much as digits as its factorization.

2162431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920.

The product of its digits is 288, while the sum is 19.

The square root of 2162431 is about 1470.5206560943. The cubic root of 2162431 is about 129.3145579493.

The spelling of 2162431 in words is "two million, one hundred sixty-two thousand, four hundred thirty-one".