Search a number
-
+
130280903 = 413177583
BaseRepresentation
bin1111100001111…
…10110111000111
3100002010221210122
413300332313013
5231322442103
620532212155
73141240464
oct760766707
9302127718
10130280903
11675a3a75
123776a05b
1320cb65bc
141343466b
15b686b38
hex7c3edc7

130280903 has 4 divisors (see below), whose sum is σ = 133458528. Its totient is φ = 127103280.

The previous prime is 130280893. The next prime is 130280921. The reversal of 130280903 is 309082031.

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

It is not a de Polignac number, because 130280903 - 210 = 130279879 is a prime.

It is a super-3 number, since 3×1302809033 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130282903) 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, 1588751 + ... + 1588832.

It is an arithmetic number, because the mean of its divisors is an integer number (33364632).

Almost surely, 2130280903 is an apocalyptic number.

130280903 is a deficient number, since it is larger than the sum of its proper divisors (3177625).

130280903 is an equidigital number, since it uses as much as digits as its factorization.

130280903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177624.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 130280903 is about 11414.0660152288. The cubic root of 130280903 is about 506.9443105959.

The spelling of 130280903 in words is "one hundred thirty million, two hundred eighty thousand, nine hundred three".

Divisors: 1 41 3177583 130280903