33145423 has 2 divisors, whose sum is σ = 33145424. Its totient is φ = 33145422.

The previous prime is 33145421. The next prime is 33145429. The reversal of 33145423 is 32454133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33145423 - 2¹ = 33145421 is a prime.

Together with 33145421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33145421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572711 + 16572712.

It is an arithmetic number, because the mean of its divisors is an integer number (16572712).

Almost surely, 2^33145423 is an apocalyptic number.

33145423 is a deficient number, since it is larger than the sum of its proper divisors (1).

33145423 is an equidigital number, since it uses as much as digits as its factorization.

33145423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 33145423 is about 5757.2061800842. The cubic root of 33145423 is about 321.2239034654.

Adding to 33145423 its reverse (32454133), we get a palindrome (65599556).

It can be divided in two parts, 331 and 45423, that added together give a palindrome (45754).

The spelling of 33145423 in words is "thirty-three million, one hundred forty-five thousand, four hundred twenty-three".