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130711949 = 1077091723
BaseRepresentation
bin1111100101010…
…00000110001101
3100002221212002022
413302220012031
5231430240244
620545335525
73145014254
oct762500615
9302855068
10130711949
1167868905
12379375a5
1321107864
141350779b
15b71e6ee
hex7ca818d

130711949 has 8 divisors (see below), whose sum is σ = 132196320. Its totient is φ = 129232656.

The previous prime is 130711937. The next prime is 130711951. The reversal of 130711949 is 949117031.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130711949 is a prime.

It is a super-2 number, since 2×1307119492 = 34171227222757202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130711979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75002 + ... + 76724.

It is an arithmetic number, because the mean of its divisors is an integer number (16524540).

Almost surely, 2130711949 is an apocalyptic number.

It is an amenable number.

130711949 is a deficient number, since it is larger than the sum of its proper divisors (1484371).

130711949 is a wasteful number, since it uses less digits than its factorization.

130711949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 130711949 is about 11432.9326508993. The cubic root of 130711949 is about 507.5027852986.

The spelling of 130711949 in words is "one hundred thirty million, seven hundred eleven thousand, nine hundred forty-nine".

Divisors: 1 107 709 1723 75863 184361 1221607 130711949