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120382331 = 313883301
BaseRepresentation
bin1110010110011…
…10001101111011
322101112001111212
413023032031323
5221304213311
615540113335
72661142616
oct713161573
9271461455
10120382331
1161a53033
123439584b
131bc2bc64
1411db917d
15a87dc8b
hex72ce37b

120382331 has 4 divisors (see below), whose sum is σ = 124265664. Its totient is φ = 116499000.

The previous prime is 120382307. The next prime is 120382337. The reversal of 120382331 is 133283021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133283021 = 677196873.

It is a cyclic number.

It is not a de Polignac number, because 120382331 - 26 = 120382267 is a prime.

It is a super-2 number, since 2×1203823312 = 28983811233987122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120382297 and 120382306.

It is not an unprimeable number, because it can be changed into a prime (120382337) 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, 1941620 + ... + 1941681.

It is an arithmetic number, because the mean of its divisors is an integer number (31066416).

Almost surely, 2120382331 is an apocalyptic number.

120382331 is a deficient number, since it is larger than the sum of its proper divisors (3883333).

120382331 is an equidigital number, since it uses as much as digits as its factorization.

120382331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883332.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 120382331 is about 10971.8882148881. Note that the first 3 decimals coincide. The cubic root of 120382331 is about 493.7656980321.

The spelling of 120382331 in words is "one hundred twenty million, three hundred eighty-two thousand, three hundred thirty-one".

Divisors: 1 31 3883301 120382331