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130102631 = 491926449
BaseRepresentation
bin1111100000100…
…11010101100111
3100001210220020222
413300103111213
5231301241011
620524314555
73136565651
oct760232547
9301726228
10130102631
116749203a
12376a2a5b
1320c53409
14133c96d1
15b64dddb
hex7c13567

130102631 has 4 divisors (see below), whose sum is σ = 130134000. Its totient is φ = 130071264.

The previous prime is 130102591. The next prime is 130102639. The reversal of 130102631 is 136201031.

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

It is a cyclic number.

It is not a de Polignac number, because 130102631 - 214 = 130086247 is a prime.

It is a super-2 number, since 2×1301026312 = 33853389186244322, 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 (130102639) 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, 8306 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (32533500).

Almost surely, 2130102631 is an apocalyptic number.

130102631 is a deficient number, since it is larger than the sum of its proper divisors (31369).

130102631 is an equidigital number, since it uses as much as digits as its factorization.

130102631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31368.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 130102631 is about 11406.2540301363. The cubic root of 130102631 is about 506.7129765400.

Adding to 130102631 its reverse (136201031), we get a palindrome (266303662).

The spelling of 130102631 in words is "one hundred thirty million, one hundred two thousand, six hundred thirty-one".

Divisors: 1 4919 26449 130102631