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2020031121 = 31503144797
BaseRepresentation
bin111100001100111…
…0011101010010001
312012210001012202110
41320121303222101
513114111443441
6532240135533
7101025660363
oct17031635221
95183035673
102020031121
11947289309
124846075a9
1326266b9b4
141523d0d33
15bc51cb16
hex78673a91

2020031121 has 8 divisors (see below), whose sum is σ = 2693614144. Its totient is φ = 1346567760.

The previous prime is 2020031071. The next prime is 2020031129. The reversal of 2020031121 is 1211300202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2020031121 - 27 = 2020030993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020031097 and 2020031106.

It is not an unprimeable number, because it can be changed into a prime (2020031129) 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, 22695 + ... + 67491.

It is an arithmetic number, because the mean of its divisors is an integer number (336701768).

Almost surely, 22020031121 is an apocalyptic number.

It is an amenable number.

2020031121 is a deficient number, since it is larger than the sum of its proper divisors (673583023).

2020031121 is a wasteful number, since it uses less digits than its factorization.

2020031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59831.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2020031121 is about 44944.7563237359. The cubic root of 2020031121 is about 1264.1133566236.

Adding to 2020031121 its reverse (1211300202), we get a palindrome (3231331323).

The spelling of 2020031121 in words is "two billion, twenty million, thirty-one thousand, one hundred twenty-one".

Divisors: 1 3 15031 44797 45093 134391 673343707 2020031121