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120340231 = 11104910429
BaseRepresentation
bin1110010110000…
…11111100000111
322101102220202121
413023003330013
5221301341411
615535150411
72660606104
oct713037407
9271386677
10120340231
1161a24440
1234375407
131bc15a4b
1411da7aab
15a871571
hex72c3f07

120340231 has 8 divisors (see below), whose sum is σ = 131418000. Its totient is φ = 109285440.

The previous prime is 120340219. The next prime is 120340277. The reversal of 120340231 is 132043021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120340231 - 221 = 118243079 is a prime.

It is a super-2 number, since 2×1203402312 = 28963542394266722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120340201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6325 + ... + 16753.

It is an arithmetic number, because the mean of its divisors is an integer number (16427250).

Almost surely, 2120340231 is an apocalyptic number.

120340231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120340231 is a deficient number, since it is larger than the sum of its proper divisors (11077769).

120340231 is a wasteful number, since it uses less digits than its factorization.

120340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11489.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120340231 is about 10969.9695077060. The cubic root of 120340231 is about 493.7081315563.

Adding to 120340231 its reverse (132043021), we get a palindrome (252383252).

The spelling of 120340231 in words is "one hundred twenty million, three hundred forty thousand, two hundred thirty-one".

Divisors: 1 11 1049 10429 11539 114719 10940021 120340231