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2030023121 = 7290003303
BaseRepresentation
bin111100011111111…
…1011000111010001
312020110211212012112
41320333323013101
513124141214441
6533234235105
7101206624520
oct17077730721
95213755175
102030023121
11951993465
12487a25a95
13264759a19
141538724b7
15bd3434eb
hex78ffb1d1

2030023121 has 4 divisors (see below), whose sum is σ = 2320026432. Its totient is φ = 1740019812.

The previous prime is 2030023103. The next prime is 2030023129. The reversal of 2030023121 is 1213200302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2030023121 - 218 = 2029760977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2030023096 and 2030023105.

It is not an unprimeable number, because it can be changed into a prime (2030023129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145001645 + ... + 145001658.

It is an arithmetic number, because the mean of its divisors is an integer number (580006608).

Almost surely, 22030023121 is an apocalyptic number.

It is an amenable number.

2030023121 is a deficient number, since it is larger than the sum of its proper divisors (290003311).

2030023121 is an equidigital number, since it uses as much as digits as its factorization.

2030023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290003310.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2030023121 is about 45055.7778869703. Note that the first 3 decimals coincide. The cubic root of 2030023121 is about 1266.1942241407.

Adding to 2030023121 its reverse (1213200302), we get a palindrome (3243223423).

The spelling of 2030023121 in words is "two billion, thirty million, twenty-three thousand, one hundred twenty-one".

Divisors: 1 7 290003303 2030023121