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131020124 = 22191799631
BaseRepresentation
bin1111100111100…
…11010101011100
3100010112111211012
413303303111130
5232020120444
621000114352
73150436604
oct763632534
9303474735
10131020124
1167a593a4
1237a659b8
13211b4c01
1413587c04
15b780b9e
hex7cf355c

131020124 has 24 divisors (see below), whose sum is σ = 242726400. Its totient is φ = 61709040.

The previous prime is 131020117. The next prime is 131020151. The reversal of 131020124 is 421020131.

It is a junction number, because it is equal to n+sod(n) for n = 131020099 and 131020108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8789 + ... + 18419.

It is an arithmetic number, because the mean of its divisors is an integer number (10113600).

Almost surely, 2131020124 is an apocalyptic number.

It is an amenable number.

131020124 is a deficient number, since it is larger than the sum of its proper divisors (111706276).

131020124 is a wasteful number, since it uses less digits than its factorization.

131020124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9833 (or 9831 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 131020124 is about 11446.4022295217. The cubic root of 131020124 is about 507.9013127990.

Adding to 131020124 its reverse (421020131), we get a palindrome (552040255).

The spelling of 131020124 in words is "one hundred thirty-one million, twenty thousand, one hundred twenty-four".

Divisors: 1 2 4 19 38 76 179 358 716 3401 6802 9631 13604 19262 38524 182989 365978 731956 1723949 3447898 6895796 32755031 65510062 131020124