2133431 has 2 divisors, whose sum is σ = 2133432. Its totient is φ = 2133430.

The previous prime is 2133427. The next prime is 2133433. The reversal of 2133431 is 1343312.

It is a happy number.

2133431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2133431 - 2² = 2133427 is a prime.

It is a super-4 number, since 4×2133431⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 2133433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066715 + 1066716.

It is an arithmetic number, because the mean of its divisors is an integer number (1066716).

2^2133431 is an apocalyptic number.

2133431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133431 is an equidigital number, since it uses as much as digits as its factorization.

2133431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 2133431 is about 1460.6269201956. The cubic root of 2133431 is about 128.7338824201.

Adding to 2133431 its reverse (1343312), we get a palindrome (3476743).

The spelling of 2133431 in words is "two million, one hundred thirty-three thousand, four hundred thirty-one".