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120218131 = 1161717713
BaseRepresentation
bin1110010101001…
…10001000010011
322101012201021101
413022212020103
5221233440011
615532405231
72656560115
oct712461023
9271181241
10120218131
1161950730
1234316817
131bba22b7
1411d753b5
15a84a2c1
hex72a6213

120218131 has 8 divisors (see below), whose sum is σ = 131367024. Its totient is φ = 109105920.

The previous prime is 120218083. The next prime is 120218159. The reversal of 120218131 is 131812021.

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

It is not a de Polignac number, because 120218131 - 213 = 120209939 is a prime.

It is a super-2 number, since 2×1202181312 = 28904798042266322, 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 = 120218099 and 120218108.

It is not an unprimeable number, because it can be changed into a prime (120218431) 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, 2070 + ... + 15643.

It is an arithmetic number, because the mean of its divisors is an integer number (16420878).

Almost surely, 2120218131 is an apocalyptic number.

120218131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120218131 is a deficient number, since it is larger than the sum of its proper divisors (11148893).

120218131 is a wasteful number, since it uses less digits than its factorization.

120218131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 120218131 is about 10964.4029021192. The cubic root of 120218131 is about 493.5410991305.

The spelling of 120218131 in words is "one hundred twenty million, two hundred eighteen thousand, one hundred thirty-one".

Divisors: 1 11 617 6787 17713 194843 10928921 120218131