20255311 has 8 divisors (see below), whose sum is σ = 22057200. Its totient is φ = 18527040.

The previous prime is 20255303. The next prime is 20255321. The reversal of 20255311 is 11355202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20255311 - 2³ = 20255303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17830 + ... + 18931.

It is an arithmetic number, because the mean of its divisors is an integer number (2757150).

Almost surely, 2^20255311 is an apocalyptic number.

20255311 is a deficient number, since it is larger than the sum of its proper divisors (1801889).

20255311 is a wasteful number, since it uses less digits than its factorization.

20255311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36809.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20255311 is about 4500.5900724238. The cubic root of 20255311 is about 272.5919157986.

The spelling of 20255311 in words is "twenty million, two hundred fifty-five thousand, three hundred eleven".