20235307 has 4 divisors (see below), whose sum is σ = 20462760. Its totient is φ = 20007856.

The previous prime is 20235269. The next prime is 20235329. The reversal of 20235307 is 70353202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20235307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20235107) 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 in 3 ways as a sum of consecutive naturals, for example, 113593 + ... + 113770.

It is an arithmetic number, because the mean of its divisors is an integer number (5115690).

Almost surely, 2^20235307 is an apocalyptic number.

20235307 is a deficient number, since it is larger than the sum of its proper divisors (227453).

20235307 is an equidigital number, since it uses as much as digits as its factorization.

20235307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227452.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 20235307 is about 4498.3671481994. The cubic root of 20235307 is about 272.5021496337.

Adding to 20235307 its reverse (70353202), we get a palindrome (90588509).

The spelling of 20235307 in words is "twenty million, two hundred thirty-five thousand, three hundred seven".