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233142131 = 1731194397
BaseRepresentation
bin11011110010101…
…11011101110011
3121020200211212202
431321113131303
5434141022011
635045013415
75530450445
oct1571273563
9536624782
10233142131
1110a66a152
12660b426b
13393bc531
1422d6c495
151570423b
hexde57773

233142131 has 8 divisors (see below), whose sum is σ = 246991680. Its totient is φ = 219307648.

The previous prime is 233142127. The next prime is 233142163. The reversal of 233142131 is 131241332.

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 233142131 - 22 = 233142127 is a prime.

It is a super-2 number, since 2×2331421312 = 108710506494442322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233142631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50825 + ... + 55221.

It is an arithmetic number, because the mean of its divisors is an integer number (30873960).

Almost surely, 2233142131 is an apocalyptic number.

233142131 is a deficient number, since it is larger than the sum of its proper divisors (13849549).

233142131 is a wasteful number, since it uses less digits than its factorization.

233142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533.

The product of its digits is 432, while the sum is 20.

The square root of 233142131 is about 15268.9924683982. The cubic root of 233142131 is about 615.4700449536.

Adding to 233142131 its reverse (131241332), we get a palindrome (364383463).

The spelling of 233142131 in words is "two hundred thirty-three million, one hundred forty-two thousand, one hundred thirty-one".

Divisors: 1 17 3119 4397 53023 74749 13714243 233142131