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20013031032 = 23323174720753
BaseRepresentation
bin10010101000110111…
…101001111001111000
31220122202001022110120
4102220313221321320
5311441313443112
613105512413240
71305640646151
oct225067517170
956582038416
1020013031032
11853a91a475
123a663a7220
131b6c2bacc7
14d7bd18928
157c1e91e8c
hex4a8de9e78

20013031032 has 64 divisors (see below), whose sum is σ = 52240308480. Its totient is φ = 6377006592.

The previous prime is 20013030977. The next prime is 20013031039. The reversal of 20013031032 is 23013031002.

It is a super-2 number, since 2×200130310322 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013031039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953968 + ... + 974720.

It is an arithmetic number, because the mean of its divisors is an integer number (816254820).

Almost surely, 220013031032 is an apocalyptic number.

It is an amenable number.

20013031032 is an abundant number, since it is smaller than the sum of its proper divisors (32227277448).

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

20013031032 is a wasteful number, since it uses less digits than its factorization.

20013031032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22532 (or 22528 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20013031032 its reverse (23013031002), we get a palindrome (43026062034).

The spelling of 20013031032 in words is "twenty billion, thirteen million, thirty-one thousand, thirty-two".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 1747 3494 5241 6988 10482 13976 20753 20964 40181 41506 41928 62259 80362 83012 120543 124518 160724 166024 241086 249036 321448 477319 482172 498072 954638 964344 1431957 1909276 2863914 3818552 5727828 11455656 36255491 72510982 108766473 145021964 217532946 290043928 435065892 833876293 870131784 1667752586 2501628879 3335505172 5003257758 6671010344 10006515516 20013031032