40305233 has 4 divisors (see below), whose sum is σ = 41242608. Its totient is φ = 39367860.

The previous prime is 40305227. The next prime is 40305241. The reversal of 40305233 is 33250304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40305233 - 2⁴ = 40305217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40305203) 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, 468623 + ... + 468708.

It is an arithmetic number, because the mean of its divisors is an integer number (10310652).

Almost surely, 2^40305233 is an apocalyptic number.

40305233 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40305233 is a deficient number, since it is larger than the sum of its proper divisors (937375).

40305233 is an equidigital number, since it uses as much as digits as its factorization.

40305233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937374.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 40305233 is about 6348.6402481161. The cubic root of 40305233 is about 342.8628877923.

Adding to 40305233 its reverse (33250304), we get a palindrome (73555537).

The spelling of 40305233 in words is "forty million, three hundred five thousand, two hundred thirty-three".