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130700731 = 754134513
BaseRepresentation
bin1111100101001…
…01010110111011
3100002221021200211
413302211112323
5231424410411
620545211551
73144636460
oct762452673
9302837624
10130700731
1167860437
1237930bb7
1321102715
1413503667
15b71b221
hex7ca55bb

130700731 has 8 divisors (see below), whose sum is σ = 149652704. Its totient is φ = 111818880.

The previous prime is 130700723. The next prime is 130700741. The reversal of 130700731 is 137007031.

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 130700731 - 23 = 130700723 is a prime.

It is a super-2 number, since 2×1307007312 = 34165362167868722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130700711) 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, 13470 + ... + 21043.

It is an arithmetic number, because the mean of its divisors is an integer number (18706588).

Almost surely, 2130700731 is an apocalyptic number.

130700731 is a deficient number, since it is larger than the sum of its proper divisors (18951973).

130700731 is an equidigital number, since it uses as much as digits as its factorization.

130700731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35061.

The product of its (nonzero) digits is 441, while the sum is 22.

The square root of 130700731 is about 11432.4420400892. The cubic root of 130700731 is about 507.4882665313.

Adding to 130700731 its reverse (137007031), we get a palindrome (267707762).

The spelling of 130700731 in words is "one hundred thirty million, seven hundred thousand, seven hundred thirty-one".

Divisors: 1 7 541 3787 34513 241591 18671533 130700731