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3101113021 = 17228179973
BaseRepresentation
bin1011100011010111…
…0011101010111101
322000010021212022211
42320311303222331
522322341104041
61231415340421
7136564011556
oct27065635275
98003255284
103101113021
111351552126
12726681711
133a5627826
14215c0732d
151323b8481
hexb8d73abd

3101113021 has 8 divisors (see below), whose sum is σ = 3285012024. Its totient is φ = 2917378560.

The previous prime is 3101113019. The next prime is 3101113027. The reversal of 3101113021 is 1203111013.

It can be written as a sum of positive squares in 4 ways, for example, as 857669796 + 2243443225 = 29286^2 + 47365^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3101113021 - 21 = 3101113019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3101112992 and 3101113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101113027) 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, 1210 + ... + 78763.

It is an arithmetic number, because the mean of its divisors is an integer number (410626503).

Almost surely, 23101113021 is an apocalyptic number.

It is an amenable number.

3101113021 is a deficient number, since it is larger than the sum of its proper divisors (183899003).

3101113021 is a wasteful number, since it uses less digits than its factorization.

3101113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82271.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 3101113021 is about 55687.6379549357. The cubic root of 3101113021 is about 1458.2742198522.

Adding to 3101113021 its reverse (1203111013), we get a palindrome (4304224034).

The spelling of 3101113021 in words is "three billion, one hundred one million, one hundred thirteen thousand, twenty-one".

Divisors: 1 17 2281 38777 79973 1359541 182418413 3101113021