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3020230021 = 711311731877
BaseRepresentation
bin1011010000000101…
…0000110110000101
321210111002120201011
42310001100312011
522141134330041
61215410002221
7134562350224
oct26401206605
97714076634
103020230021
11130a928576
12703576371
13391948573
14209190cbb
1512a23ce81
hexb4050d85

3020230021 has 16 divisors (see below), whose sum is σ = 3105641088. Its totient is φ = 2936315200.

The previous prime is 3020230019. The next prime is 3020230033. The reversal of 3020230021 is 1200320203.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3020230021 - 21 = 3020230019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3020229983 and 3020230010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1608135 + ... + 1610011.

It is an arithmetic number, because the mean of its divisors is an integer number (194102568).

Almost surely, 23020230021 is an apocalyptic number.

It is an amenable number.

3020230021 is a deficient number, since it is larger than the sum of its proper divisors (85411067).

3020230021 is a wasteful number, since it uses less digits than its factorization.

3020230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3020230021 is about 54956.6194466144. The cubic root of 3020230021 is about 1445.4841703957.

Adding to 3020230021 its reverse (1200320203), we get a palindrome (4220550224).

The spelling of 3020230021 in words is "three billion, twenty million, two hundred thirty thousand, twenty-one".

Divisors: 1 71 131 173 1877 9301 12283 22663 133267 245887 324721 1609073 17457977 23055191 42538451 3020230021