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12031033120 = 255137548861
BaseRepresentation
bin10110011010001101…
…01111111100100000
31011001110111210210021
423031012233330200
5144114421024440
65305454443224
7604066044211
oct131506577440
934043453707
1012031033120
115114228287
1223b9203514
13119970bb12
14821bb9408
154a635084a
hex2cd1aff20

12031033120 has 48 divisors (see below), whose sum is σ = 28630837368. Its totient is φ = 4777277440.

The previous prime is 12031033117. The next prime is 12031033121. The reversal of 12031033120 is 2133013021.

It can be written as a sum of positive squares in 4 ways, for example, as 11034241936 + 996791184 = 105044^2 + 31572^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12031033094 and 12031033103.

It is not an unprimeable number, because it can be changed into a prime (12031033121) 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, 252511 + ... + 296350.

Almost surely, 212031033120 is an apocalyptic number.

12031033120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031033120 is an abundant number, since it is smaller than the sum of its proper divisors (16599804248).

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

12031033120 is a wasteful number, since it uses less digits than its factorization.

12031033120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549013 (or 549005 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12031033120 its reverse (2133013021), we get a palindrome (14164046141).

The spelling of 12031033120 in words is "twelve billion, thirty-one million, thirty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 137 160 274 548 685 1096 1370 2192 2740 4384 5480 10960 21920 548861 1097722 2195444 2744305 4390888 5488610 8781776 10977220 17563552 21954440 43908880 75193957 87817760 150387914 300775828 375969785 601551656 751939570 1203103312 1503879140 2406206624 3007758280 6015516560 12031033120