Search a number
-
+
20301415213 = 24778195969
BaseRepresentation
bin10010111010000011…
…110000001100101101
31221101211200202012011
4102322003300030231
5313034130241323
613154253441221
71316042116312
oct227203601455
957354622164
1020301415213
11867868a802
123b26aa0211
131bb6c7c931
14da8346d09
157dc45920d
hex4ba0f032d

20301415213 has 4 divisors (see below), whose sum is σ = 20309613660. Its totient is φ = 20293216768.

The previous prime is 20301415207. The next prime is 20301415217. The reversal of 20301415213 is 31251410302.

It is a happy number.

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 16205799204 + 4095616009 = 127302^2 + 63997^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301415213 - 233 = 11711480621 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 (20301415217) 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, 4095508 + ... + 4100461.

It is an arithmetic number, because the mean of its divisors is an integer number (5077403415).

Almost surely, 220301415213 is an apocalyptic number.

It is an amenable number.

20301415213 is a deficient number, since it is larger than the sum of its proper divisors (8198447).

20301415213 is an equidigital number, since it uses as much as digits as its factorization.

20301415213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8198446.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20301415213 its reverse (31251410302), we get a palindrome (51552825515).

The spelling of 20301415213 in words is "twenty billion, three hundred one million, four hundred fifteen thousand, two hundred thirteen".

Divisors: 1 2477 8195969 20301415213