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120430131 = 340143377
BaseRepresentation
bin1110010110110…
…01111000110011
322101121111002020
413023121320303
5221312231011
615541122523
72661432153
oct713317063
9271544066
10120430131
1161a85a38
12343b9443
131bc47943
1411dcc763
15a88d006
hex72d9e33

120430131 has 4 divisors (see below), whose sum is σ = 160573512. Its totient is φ = 80286752.

The previous prime is 120430109. The next prime is 120430169. The reversal of 120430131 is 131034021.

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 120430131 - 214 = 120413747 is a prime.

It is a super-2 number, since 2×1204301312 = 29006832905354322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120430131.

It is not an unprimeable number, because it can be changed into a prime (120430931) 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, 20071686 + ... + 20071691.

It is an arithmetic number, because the mean of its divisors is an integer number (40143378).

Almost surely, 2120430131 is an apocalyptic number.

120430131 is a deficient number, since it is larger than the sum of its proper divisors (40143381).

120430131 is an equidigital number, since it uses as much as digits as its factorization.

120430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40143380.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120430131 is about 10974.0662928561. The cubic root of 120430131 is about 493.8310422760.

Adding to 120430131 its reverse (131034021), we get a palindrome (251464152).

The spelling of 120430131 in words is "one hundred twenty million, four hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 40143377 120430131