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131034661 = 1073073989
BaseRepresentation
bin1111100111101…
…10111000100101
3100010120020202121
413303312320211
5232021102121
621000305541
73150530152
oct763667045
9303506677
10131034661
1167a6930a
1237a722b1
13211bb704
141358d229
15b785141
hex7cf6e25

131034661 has 8 divisors (see below), whose sum is σ = 132723360. Its totient is φ = 129354768.

The previous prime is 131034653. The next prime is 131034667. The reversal of 131034661 is 166430131.

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 not a de Polignac number, because 131034661 - 23 = 131034653 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 (131034667) by changing a digit.

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, 30855 + ... + 34843.

It is an arithmetic number, because the mean of its divisors is an integer number (16590420).

Almost surely, 2131034661 is an apocalyptic number.

It is an amenable number.

131034661 is a deficient number, since it is larger than the sum of its proper divisors (1688699).

131034661 is a wasteful number, since it uses less digits than its factorization.

131034661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 131034661 is about 11447.0372149303. The cubic root of 131034661 is about 507.9200963978.

Adding to 131034661 its reverse (166430131), we get a palindrome (297464792).

The spelling of 131034661 in words is "one hundred thirty-one million, thirty-four thousand, six hundred sixty-one".

Divisors: 1 107 307 3989 32849 426823 1224623 131034661