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3012232021 = 4764090043
BaseRepresentation
bin1011001110001011…
…0000001101010101
321202221001020111221
42303202300031111
522132112411041
61214522330341
7134434356361
oct26342601525
97687036457
103012232021
111306365557
127009599b1
133900a8016
142080ac2a1
151296ad2d1
hexb38b0355

3012232021 has 4 divisors (see below), whose sum is σ = 3076322112. Its totient is φ = 2948141932.

The previous prime is 3012232019. The next prime is 3012232039. The reversal of 3012232021 is 1202322103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1202322103 = 4639259177.

It is a cyclic number.

It is not a de Polignac number, because 3012232021 - 21 = 3012232019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012231986 and 3012232004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012232061) 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, 32044975 + ... + 32045068.

It is an arithmetic number, because the mean of its divisors is an integer number (769080528).

Almost surely, 23012232021 is an apocalyptic number.

It is an amenable number.

3012232021 is a deficient number, since it is larger than the sum of its proper divisors (64090091).

3012232021 is an equidigital number, since it uses as much as digits as its factorization.

3012232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64090090.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3012232021 is about 54883.8047241625. The cubic root of 3012232021 is about 1444.2070929990.

Adding to 3012232021 its reverse (1202322103), we get a palindrome (4214554124).

It can be divided in two parts, 301 and 2232021, that added together give a palindrome (2232322).

The spelling of 3012232021 in words is "three billion, twelve million, two hundred thirty-two thousand, twenty-one".

Divisors: 1 47 64090043 3012232021