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11230231020 = 2235656928493
BaseRepresentation
bin10100111010101111…
…11011100111101100
31001222122122211211020
422131113323213230
5140444414343040
65054210454140
7545203250211
oct123527734754
931878584736
1011230231020
114843199868
122214b94350
13109c837b18
147876c1b08
1545adbacd0
hex29d5fb9ec

11230231020 has 48 divisors (see below), whose sum is σ = 31450537440. Its totient is φ = 2994167296.

The previous prime is 11230230997. The next prime is 11230231043. The reversal of 11230231020 is 2013203211.

It is an interprime number because it is at equal distance from previous prime (11230230997) and next prime (11230231043).

It is a super-2 number, since 2×112302310202 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379894 + ... + 408386.

It is an arithmetic number, because the mean of its divisors is an integer number (655219530).

Almost surely, 211230231020 is an apocalyptic number.

11230231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11230231020 is an abundant number, since it is smaller than the sum of its proper divisors (20220306420).

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

11230231020 is a wasteful number, since it uses less digits than its factorization.

11230231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35074 (or 35072 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 11230231020 its reverse (2013203211), we get a palindrome (13243434231).

The spelling of 11230231020 in words is "eleven billion, two hundred thirty million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 6569 13138 19707 26276 28493 32845 39414 56986 65690 78828 85479 98535 113972 131380 142465 170958 197070 284930 341916 394140 427395 569860 854790 1709580 187170517 374341034 561511551 748682068 935852585 1123023102 1871705170 2246046204 2807557755 3743410340 5615115510 11230231020