233285405 has 4 divisors (see below), whose sum is σ = 279942492. Its totient is φ = 186628320.

The previous prime is 233285369. The next prime is 233285413. The reversal of 233285405 is 504582332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39212644 + 194072761 = 6262^2 + 13931^2 .

It is not a de Polignac number, because 233285405 - 2⁸ = 233285149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23328536 + ... + 23328545.

It is an arithmetic number, because the mean of its divisors is an integer number (69985623).

Almost surely, 2^233285405 is an apocalyptic number.

It is an amenable number.

233285405 is a deficient number, since it is larger than the sum of its proper divisors (46657087).

233285405 is an equidigital number, since it uses as much as digits as its factorization.

233285405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46657086.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 233285405 is about 15273.6834129820. The cubic root of 233285405 is about 615.5960950982.

The spelling of 233285405 in words is "two hundred thirty-three million, two hundred eighty-five thousand, four hundred five".