20235313 has 4 divisors (see below), whose sum is σ = 23126080. Its totient is φ = 17344548.

The previous prime is 20235269. The next prime is 20235329. The reversal of 20235313 is 31353202.

20235313 is nontrivially palindromic in base 16.

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 20235313 - 2⁹ = 20234801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20235353) 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, 1445373 + ... + 1445386.

It is an arithmetic number, because the mean of its divisors is an integer number (5781520).

Almost surely, 2^20235313 is an apocalyptic number.

It is an amenable number.

20235313 is a deficient number, since it is larger than the sum of its proper divisors (2890767).

20235313 is an equidigital number, since it uses as much as digits as its factorization.

20235313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890766.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20235313 is about 4498.3678151081. The cubic root of 20235313 is about 272.5021765671.

Adding to 20235313 its reverse (31353202), we get a palindrome (51588515).

The spelling of 20235313 in words is "twenty million, two hundred thirty-five thousand, three hundred thirteen".