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131056984 = 23191396203
BaseRepresentation
bin1111100111111…
…00010101011000
3100010121101101101
413303330111120
5232022310414
621001001144
73150652222
oct763742530
9303541341
10131056984
1167a84063
1237a831b4
13211c8916
1413597412
15b78ba74
hex7cfc558

131056984 has 32 divisors (see below), whose sum is σ = 260568000. Its totient is φ = 61623072.

The previous prime is 131056979. The next prime is 131056999. The reversal of 131056984 is 489650131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18027 + ... + 24229.

It is an arithmetic number, because the mean of its divisors is an integer number (8142750).

Almost surely, 2131056984 is an apocalyptic number.

It is an amenable number.

131056984 is a deficient number, since it is larger than the sum of its proper divisors (129511016).

131056984 is a wasteful number, since it uses less digits than its factorization.

131056984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6363 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 131056984 is about 11448.0122292038. The cubic root of 131056984 is about 507.9489377655.

The spelling of 131056984 in words is "one hundred thirty-one million, fifty-six thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 19 38 76 139 152 278 556 1112 2641 5282 6203 10564 12406 21128 24812 49624 117857 235714 471428 862217 942856 1724434 3448868 6897736 16382123 32764246 65528492 131056984