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130231029 = 3157276499
BaseRepresentation
bin1111100001100…
…10101011110101
3100002001102101110
413300302223311
5231314343104
620531145233
73140642205
oct760625365
9302042343
10130231029
116756a555
1237745219
1320c999a6
1413420405
15b676e89
hex7c32af5

130231029 has 8 divisors (see below), whose sum is σ = 174748000. Its totient is φ = 86267376.

The previous prime is 130231027. The next prime is 130231039. The reversal of 130231029 is 920132031.

It is a happy number.

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

It is not a de Polignac number, because 130231029 - 21 = 130231027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130230996 and 130231014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130231027) 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, 137779 + ... + 138720.

It is an arithmetic number, because the mean of its divisors is an integer number (21843500).

Almost surely, 2130231029 is an apocalyptic number.

It is an amenable number.

130231029 is a deficient number, since it is larger than the sum of its proper divisors (44516971).

130231029 is a wasteful number, since it uses less digits than its factorization.

130231029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276659.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 130231029 is about 11411.8810456471. The cubic root of 130231029 is about 506.8796130412.

The spelling of 130231029 in words is "one hundred thirty million, two hundred thirty-one thousand, twenty-nine".

Divisors: 1 3 157 471 276499 829497 43410343 130231029