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230523131 = 345766683
BaseRepresentation
bin11011011110110…
…00000011111011
3121001202210021202
431233120003323
5433003220011
634512524415
75466262046
oct1557300373
9531683252
10230523131
11109140493
126525070b
13389b3427
1422889c5d
151538823b
hexdbd80fb

230523131 has 4 divisors (see below), whose sum is σ = 230593272. Its totient is φ = 230452992.

The previous prime is 230523103. The next prime is 230523133. The reversal of 230523131 is 131325032.

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

It is a cyclic number.

It is not a de Polignac number, because 230523131 - 226 = 163414267 is a prime.

It is a super-2 number, since 2×2305231312 = 106281827852086322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230523133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29885 + ... + 36798.

It is an arithmetic number, because the mean of its divisors is an integer number (57648318).

Almost surely, 2230523131 is an apocalyptic number.

230523131 is a deficient number, since it is larger than the sum of its proper divisors (70141).

230523131 is an equidigital number, since it uses as much as digits as its factorization.

230523131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70140.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 230523131 is about 15182.9882104940. The cubic root of 230523131 is about 613.1567353164.

Adding to 230523131 its reverse (131325032), we get a palindrome (361848163).

The spelling of 230523131 in words is "two hundred thirty million, five hundred twenty-three thousand, one hundred thirty-one".

Divisors: 1 3457 66683 230523131