Base | Representation |
---|---|
bin | 1111100010111… |
… | …00011010001011 |
3 | 100002101002211011 |
4 | 13301130122023 |
5 | 231340330211 |
6 | 20534544351 |
7 | 3142253362 |
oct | 761343213 |
9 | 302332734 |
10 | 130401931 |
11 | 676769a0 |
12 | 378080b7 |
13 | 2102970a |
14 | 134667d9 |
15 | b6ac921 |
hex | 7c5c68b |
130401931 has 8 divisors (see below), whose sum is σ = 142397424. Its totient is φ = 118429920.
The previous prime is 130401913. The next prime is 130401941. The reversal of 130401931 is 139104031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130401931 - 221 = 128304779 is a prime.
It is a super-2 number, since 2×1304019312 = 34009327217057522, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130401941) 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, 6981 + ... + 17593.
It is an arithmetic number, because the mean of its divisors is an integer number (17799678).
Almost surely, 2130401931 is an apocalyptic number.
130401931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
130401931 is a deficient number, since it is larger than the sum of its proper divisors (11995493).
130401931 is a wasteful number, since it uses less digits than its factorization.
130401931 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11741.
The product of its (nonzero) digits is 324, while the sum is 22.
The square root of 130401931 is about 11419.3664885579. The cubic root of 130401931 is about 507.1012419277.
Adding to 130401931 its reverse (139104031), we get a palindrome (269505962).
The spelling of 130401931 in words is "one hundred thirty million, four hundred one thousand, nine hundred thirty-one".
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