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230415953 = 580739679
BaseRepresentation
bin11011011101111…
…01111001010001
3121001120100021012
431232331321101
5432441302303
634510340305
75465334425
oct1556757121
9531510235
10230415953
11109077a09
12651ba695
1338976701
142285cb85
15153665d8
hexdbbde51

230415953 has 4 divisors (see below), whose sum is σ = 230461440. Its totient is φ = 230370468.

The previous prime is 230415947. The next prime is 230415961. The reversal of 230415953 is 359514032.

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 230415953 - 210 = 230414929 is a prime.

It is a super-2 number, since 2×2304159532 = 106183022793796418, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230415923) 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, 14033 + ... + 25646.

It is an arithmetic number, because the mean of its divisors is an integer number (57615360).

Almost surely, 2230415953 is an apocalyptic number.

It is an amenable number.

230415953 is a deficient number, since it is larger than the sum of its proper divisors (45487).

230415953 is an equidigital number, since it uses as much as digits as its factorization.

230415953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45486.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 230415953 is about 15179.4582577904. The cubic root of 230415953 is about 613.0616948179.

Adding to 230415953 its reverse (359514032), we get a palindrome (589929985).

The spelling of 230415953 in words is "two hundred thirty million, four hundred fifteen thousand, nine hundred fifty-three".

Divisors: 1 5807 39679 230415953