233775421 has 16 divisors (see below), whose sum is σ = 260947008. Its totient is φ = 207625600.

The previous prime is 233775413. The next prime is 233775439. The reversal of 233775421 is 124577332.

It is a cyclic number.

It is not a de Polignac number, because 233775421 - 2³ = 233775413 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 (233775491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163110 + ... + 164536.

It is an arithmetic number, because the mean of its divisors is an integer number (16309188).

Almost surely, 2^233775421 is an apocalyptic number.

It is an amenable number.

233775421 is a deficient number, since it is larger than the sum of its proper divisors (27171587).

233775421 is a wasteful number, since it uses less digits than its factorization.

233775421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its digits is 35280, while the sum is 34.

The square root of 233775421 is about 15289.7161844162. The cubic root of 233775421 is about 616.0268135360.

The spelling of 233775421 in words is "two hundred thirty-three million, seven hundred seventy-five thousand, four hundred twenty-one".