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20311210300 = 2252238830961
BaseRepresentation
bin10010111010101001…
…000111100100111100
31221102112010101112011
4102322221013210330
5313044132212200
613155243421004
71316221303363
oct227251074474
957375111464
1020311210300
11868316aa17
123b2a224764
131bb8ccc144
14da97767da
157dd2415ba
hex4baa4793c

20311210300 has 36 divisors (see below), whose sum is σ = 45991650096. Its totient is φ = 7771244800.

The previous prime is 20311210289. The next prime is 20311210333. The reversal of 20311210300 is 301211302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4413181 + ... + 4417780.

It is an arithmetic number, because the mean of its divisors is an integer number (1277545836).

Almost surely, 220311210300 is an apocalyptic number.

20311210300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311210300 is an abundant number, since it is smaller than the sum of its proper divisors (25680439796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311210300 is a wasteful number, since it uses less digits than its factorization.

20311210300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830998 (or 8830991 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20311210300 its reverse (301211302), we get a palindrome (20612421602).

The spelling of 20311210300 in words is "twenty billion, three hundred eleven million, two hundred ten thousand, three hundred".

Divisors: 1 2 4 5 10 20 23 25 46 50 92 100 115 230 460 575 1150 2300 8830961 17661922 35323844 44154805 88309610 176619220 203112103 220774025 406224206 441548050 812448412 883096100 1015560515 2031121030 4062242060 5077802575 10155605150 20311210300