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130120213 = 557233609
BaseRepresentation
bin1111100000101…
…11101000010101
3100001211210101011
413300113220111
5231302321323
620524532221
73140001136
oct760275025
9301753334
10130120213
11674a4273
12376b1071
1320c5b412
14133d1c8d
15b65420d
hex7c17a15

130120213 has 4 divisors (see below), whose sum is σ = 130354380. Its totient is φ = 129886048.

The previous prime is 130120201. The next prime is 130120229. The reversal of 130120213 is 312021031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4635409 + 125484804 = 2153^2 + 11202^2 .

It is a cyclic number.

It is not a de Polignac number, because 130120213 - 25 = 130120181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130120193 and 130120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130120283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116248 + ... + 117361.

It is an arithmetic number, because the mean of its divisors is an integer number (32588595).

Almost surely, 2130120213 is an apocalyptic number.

It is an amenable number.

130120213 is a deficient number, since it is larger than the sum of its proper divisors (234167).

130120213 is an equidigital number, since it uses as much as digits as its factorization.

130120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234166.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 130120213 is about 11407.0247216353. The cubic root of 130120213 is about 506.7358011521.

Adding to 130120213 its reverse (312021031), we get a palindrome (442141244).

The spelling of 130120213 in words is "one hundred thirty million, one hundred twenty thousand, two hundred thirteen".

Divisors: 1 557 233609 130120213