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130242443231 = 186071699961
BaseRepresentation
bin111100101001100001…
…1011111011111011111
3110110011211010122012202
41321103003133133133
54113214031140411
6135455455322115
712260346333635
oct1712303373737
9413154118182
10130242443231
115026551133a
12212a9b2033b
13c38819c774
146437779355
1535c42a383b
hex1e530df7df

130242443231 has 4 divisors (see below), whose sum is σ = 130243329264. Its totient is φ = 130241557200.

The previous prime is 130242443207. The next prime is 130242443263. The reversal of 130242443231 is 132344242031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132344242031 = 229615763871.

It is a cyclic number.

It is not a de Polignac number, because 130242443231 - 26 = 130242443167 is a prime.

It is a super-2 number, since 2×1302424432312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130242443194 and 130242443203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130242443131) 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, 163910 + ... + 536051.

It is an arithmetic number, because the mean of its divisors is an integer number (32560832316).

Almost surely, 2130242443231 is an apocalyptic number.

130242443231 is a deficient number, since it is larger than the sum of its proper divisors (886033).

130242443231 is an equidigital number, since it uses as much as digits as its factorization.

130242443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886032.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 130242443231 its reverse (132344242031), we get a palindrome (262586685262).

The spelling of 130242443231 in words is "one hundred thirty billion, two hundred forty-two million, four hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 186071 699961 130242443231