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131001133 = 1731248579
BaseRepresentation
bin1111100111011…
…10101100101101
3100010111112202211
413303232230231
5232014014013
620555450421
73150330334
oct763565455
9303445684
10131001133
1167a460aa
1237a56a11
13211a9383
1413580d1b
15b77a23d
hex7ceeb2d

131001133 has 8 divisors (see below), whose sum is σ = 143182080. Its totient is φ = 119317440.

The previous prime is 131001131. The next prime is 131001137. The reversal of 131001133 is 331100131.

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 131001133 - 21 = 131001131 is a prime.

It is a super-2 number, since 2×1310011332 = 34322593694567378, 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 (131001131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123763 + ... + 124816.

It is an arithmetic number, because the mean of its divisors is an integer number (17897760).

Almost surely, 2131001133 is an apocalyptic number.

It is an amenable number.

131001133 is a deficient number, since it is larger than the sum of its proper divisors (12180947).

131001133 is a wasteful number, since it uses less digits than its factorization.

131001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248627.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 131001133 is about 11445.5726374874. The cubic root of 131001133 is about 507.8767719890.

Adding to 131001133 its reverse (331100131), we get a palindrome (462101264).

The spelling of 131001133 in words is "one hundred thirty-one million, one thousand, one hundred thirty-three".

Divisors: 1 17 31 527 248579 4225843 7705949 131001133