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23130413 = 110920857
BaseRepresentation
bin101100000111…
…1000100101101
31121112010221222
41120033010231
521410133123
62143433125
7400414415
oct130170455
947463858
1023130413
1112069249
1278b57a5
134a3b247
143101645
15206d6c8
hex160f12d

23130413 has 4 divisors (see below), whose sum is σ = 23152380. Its totient is φ = 23108448.

The previous prime is 23130409. The next prime is 23130449. The reversal of 23130413 is 31403132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11276164 + 11854249 = 3358^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 23130413 - 22 = 23130409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130391 and 23130400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130463) 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, 9320 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (5788095).

Almost surely, 223130413 is an apocalyptic number.

It is an amenable number.

23130413 is a deficient number, since it is larger than the sum of its proper divisors (21967).

23130413 is a wasteful number, since it uses less digits than its factorization.

23130413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21966.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23130413 is about 4809.4087994264. The cubic root of 23130413 is about 284.9231884927.

Adding to 23130413 its reverse (31403132), we get a palindrome (54533545).

The spelling of 23130413 in words is "twenty-three million, one hundred thirty thousand, four hundred thirteen".

Divisors: 1 1109 20857 23130413