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120132431 = 1073493217
BaseRepresentation
bin1110010100100…
…01001101001111
322101001100201022
413022101031033
5221223214211
615530504355
72656052216
oct712211517
9271040638
10120132431
11618a2301
12342950bb
131bb722a3
1411d5207d
15a82ebdb
hex729134f

120132431 has 8 divisors (see below), whose sum is σ = 121640400. Its totient is φ = 118631808.

The previous prime is 120132379. The next prime is 120132433. The reversal of 120132431 is 134231021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120132431 is a prime.

It is a super-2 number, since 2×1201324312 = 28863601955939522, 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 (120132433) 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, 35735 + ... + 38951.

It is an arithmetic number, because the mean of its divisors is an integer number (15205050).

Almost surely, 2120132431 is an apocalyptic number.

120132431 is a deficient number, since it is larger than the sum of its proper divisors (1507969).

120132431 is a wasteful number, since it uses less digits than its factorization.

120132431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120132431 is about 10960.4941038258. The cubic root of 120132431 is about 493.4237942324.

Adding to 120132431 its reverse (134231021), we get a palindrome (254363452).

The spelling of 120132431 in words is "one hundred twenty million, one hundred thirty-two thousand, four hundred thirty-one".

Divisors: 1 107 349 3217 37343 344219 1122733 120132431