20913301 has 4 divisors (see below), whose sum is σ = 21256204. Its totient is φ = 20570400.

The previous prime is 20913293. The next prime is 20913329. The reversal of 20913301 is 10331902.

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 6275025 + 14638276 = 2505^2 + 3826^2 .

It is a cyclic number.

It is not a de Polignac number, because 20913301 - 2³ = 20913293 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 (20913391) 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, 171360 + ... + 171481.

It is an arithmetic number, because the mean of its divisors is an integer number (5314051).

Almost surely, 2^20913301 is an apocalyptic number.

It is an amenable number.

20913301 is a deficient number, since it is larger than the sum of its proper divisors (342903).

20913301 is an equidigital number, since it uses as much as digits as its factorization.

20913301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342902.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20913301 is about 4573.1062747327. The cubic root of 20913301 is about 275.5122177974.

The spelling of 20913301 in words is "twenty million, nine hundred thirteen thousand, three hundred one".