Search a number
-
+
130200031 = 1331323077
BaseRepresentation
bin1111100001010…
…11000111011111
3100001222211212101
413300223013133
5231312400111
620530345531
73140452633
oct760530737
9301884771
10130200031
1167549235
123772b2a7
1320c88850
1413412dc3
15b66cbc1
hex7c2b1df

130200031 has 8 divisors (see below), whose sum is σ = 144738944. Its totient is φ = 116307360.

The previous prime is 130200029. The next prime is 130200043. The reversal of 130200031 is 130002031.

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

It is not a de Polignac number, because 130200031 - 21 = 130200029 is a prime.

It is a super-2 number, since 2×1302000312 = 33904096144801922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130199990 and 130200017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130200071) 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, 161136 + ... + 161941.

It is an arithmetic number, because the mean of its divisors is an integer number (18092368).

Almost surely, 2130200031 is an apocalyptic number.

130200031 is a deficient number, since it is larger than the sum of its proper divisors (14538913).

130200031 is a wasteful number, since it uses less digits than its factorization.

130200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323121.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 130200031 is about 11410.5228188721. The cubic root of 130200031 is about 506.8393934889.

Adding to 130200031 its reverse (130002031), we get a palindrome (260202062).

It can be divided in two parts, 1302000 and 31, that added together give a palindrome (1302031).

The spelling of 130200031 in words is "one hundred thirty million, two hundred thousand, thirty-one".

Divisors: 1 13 31 403 323077 4200001 10015387 130200031