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131034443 = 857152899
BaseRepresentation
bin1111100111101…
…10110101001011
3100010120020110112
413303312311023
5232021100233
621000304535
73150526421
oct763666513
9303506415
10131034443
1167a69131
1237a7214b
13211bb597
141358d111
15b785048
hex7cf6d4b

131034443 has 4 divisors (see below), whose sum is σ = 131188200. Its totient is φ = 130880688.

The previous prime is 131034389. The next prime is 131034451. The reversal of 131034443 is 344430131.

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 131034443 - 28 = 131034187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131034143) 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, 75593 + ... + 77306.

It is an arithmetic number, because the mean of its divisors is an integer number (32797050).

Almost surely, 2131034443 is an apocalyptic number.

131034443 is a deficient number, since it is larger than the sum of its proper divisors (153757).

131034443 is an equidigital number, since it uses as much as digits as its factorization.

131034443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153756.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131034443 is about 11447.0276928118. The cubic root of 131034443 is about 507.9198147251.

Adding to 131034443 its reverse (344430131), we get a palindrome (475464574).

It can be divided in two parts, 1310 and 34443, that added together give a palindrome (35753).

The spelling of 131034443 in words is "one hundred thirty-one million, thirty-four thousand, four hundred forty-three".

Divisors: 1 857 152899 131034443