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131020108 = 22376773181
BaseRepresentation
bin1111100111100…
…11010101001100
3100010112111210121
413303303111030
5232020120413
621000114324
73150436552
oct763632514
9303474717
10131020108
1167a5938a
1237a659a4
13211b4bbb
1413587bd2
15b780b8d
hex7cf354c

131020108 has 48 divisors (see below), whose sum is σ = 243609184. Its totient is φ = 61585920.

The previous prime is 131020103. The next prime is 131020117. The reversal of 131020108 is 801020131.

It is a junction number, because it is equal to n+sod(n) for n = 131020091 and 131020100.

It is not an unprimeable number, because it can be changed into a prime (131020103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723778 + ... + 723958.

Almost surely, 2131020108 is an apocalyptic number.

It is an amenable number.

131020108 is a deficient number, since it is larger than the sum of its proper divisors (112589076).

131020108 is a wasteful number, since it uses less digits than its factorization.

131020108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 131020108 is about 11446.4015306121. The cubic root of 131020108 is about 507.9012921242.

Adding to 131020108 its reverse (801020131), we get a palindrome (932040239).

The spelling of 131020108 in words is "one hundred thirty-one million, twenty thousand, one hundred eight".

Divisors: 1 2 4 37 67 73 74 134 146 148 181 268 292 362 724 2479 2701 4891 4958 5402 6697 9782 9916 10804 12127 13213 13394 19564 24254 26426 26788 48508 52852 180967 361934 448699 488881 723868 885271 897398 977762 1770542 1794796 1955524 3541084 32755027 65510054 131020108