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120131197 = 177066541
BaseRepresentation
bin1110010100100…
…00111001111101
322101001022000121
413022100321331
5221223144242
615530454541
72656045504
oct712207175
9271038017
10120131197
11618a138a
1234294451
131bb71864
1411d5183b
15a82e667
hex7290e7d

120131197 has 4 divisors (see below), whose sum is σ = 127197756. Its totient is φ = 113064640.

The previous prime is 120131177. The next prime is 120131213. The reversal of 120131197 is 791131021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66928761 + 53202436 = 8181^2 + 7294^2 .

It is a cyclic number.

It is not a de Polignac number, because 120131197 - 27 = 120131069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120131177) 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, 3533254 + ... + 3533287.

It is an arithmetic number, because the mean of its divisors is an integer number (31799439).

Almost surely, 2120131197 is an apocalyptic number.

120131197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

120131197 is a deficient number, since it is larger than the sum of its proper divisors (7066559).

120131197 is an equidigital number, since it uses as much as digits as its factorization.

120131197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066558.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 120131197 is about 10960.4378105986. The cubic root of 120131197 is about 493.4221047440.

The spelling of 120131197 in words is "one hundred twenty million, one hundred thirty-one thousand, one hundred ninety-seven".

Divisors: 1 17 7066541 120131197