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120235431 = 3373107449
BaseRepresentation
bin1110010101010…
…10010110100111
322101020121000010
413022222112213
5221240013211
615533021303
72656661421
oct712522647
9271217003
10120235431
1161962728
1234324833
131bbaa134
1411d7b811
15a8504a6
hex72aa5a7

120235431 has 8 divisors (see below), whose sum is σ = 160745200. Its totient is φ = 79941312.

The previous prime is 120235397. The next prime is 120235433. The reversal of 120235431 is 134532021.

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

It is not a de Polignac number, because 120235431 - 27 = 120235303 is a prime.

It is a super-2 number, since 2×1202354312 = 28913117735511522, 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 = 120235398 and 120235407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120235433) 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, 52606 + ... + 54843.

It is an arithmetic number, because the mean of its divisors is an integer number (20093150).

Almost surely, 2120235431 is an apocalyptic number.

120235431 is a deficient number, since it is larger than the sum of its proper divisors (40509769).

120235431 is a wasteful number, since it uses less digits than its factorization.

120235431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107825.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 120235431 is about 10965.1917903883. The cubic root of 120235431 is about 493.5647723524.

Adding to 120235431 its reverse (134532021), we get a palindrome (254767452).

The spelling of 120235431 in words is "one hundred twenty million, two hundred thirty-five thousand, four hundred thirty-one".

Divisors: 1 3 373 1119 107449 322347 40078477 120235431