Search a number
-
+
20310130430 = 2515161133963
BaseRepresentation
bin10010111010100100…
…111111111011111110
31221102110002112012222
4102322210333323332
5313043343133210
613155204325342
71316206155152
oct227244777376
957373075188
1020310130430
1186825a2667
123b299a3852
131bb8a11775
14da9575062
157dd0cb655
hex4ba93fefe

20310130430 has 16 divisors (see below), whose sum is σ = 36560919024. Its totient is φ = 8123455680.

The previous prime is 20310130411. The next prime is 20310130433. The reversal of 20310130430 is 3403101302.

It is a happy number.

It is a super-2 number, since 2×203101304302 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20310130399 and 20310130408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310130433) 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, 84629 + ... + 218591.

It is an arithmetic number, because the mean of its divisors is an integer number (2285057439).

Almost surely, 220310130430 is an apocalyptic number.

20310130430 is a deficient number, since it is larger than the sum of its proper divisors (16250788594).

20310130430 is a wasteful number, since it uses less digits than its factorization.

20310130430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149131.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20310130430 its reverse (3403101302), we get a palindrome (23713231732).

The spelling of 20310130430 in words is "twenty billion, three hundred ten million, one hundred thirty thousand, four hundred thirty".

Divisors: 1 2 5 10 15161 30322 75805 133963 151610 267926 669815 1339630 2031013043 4062026086 10155065215 20310130430