Base | Representation |
---|---|
bin | 111101001001000101… |
… | …0011101000110000111 |
3 | 110112220121102201202210 |
4 | 1322102022131012013 |
5 | 4122401103424111 |
6 | 140152521034503 |
7 | 12325524031443 |
oct | 1722212350607 |
9 | 415817381683 |
10 | 131301233031 |
11 | 50759139831 |
12 | 21544625a33 |
13 | c4c6651ac7 |
14 | 64d822b823 |
15 | 36371e90a6 |
hex | 1e9229d187 |
131301233031 has 16 divisors (see below), whose sum is σ = 186503675904. Its totient is φ = 81879652224.
The previous prime is 131301233029. The next prime is 131301233081. The reversal of 131301233031 is 130332103131.
It is not a de Polignac number, because 131301233031 - 21 = 131301233029 is a prime.
It is a super-2 number, since 2×1313012330312 (a number of 23 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 131301232989 and 131301233007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131301233081) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7889031 + ... + 7905656.
It is an arithmetic number, because the mean of its divisors is an integer number (11656479744).
Almost surely, 2131301233031 is an apocalyptic number.
131301233031 is a deficient number, since it is larger than the sum of its proper divisors (55202442873).
131301233031 is a wasteful number, since it uses less digits than its factorization.
131301233031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15794870.
The product of its (nonzero) digits is 486, while the sum is 21.
Adding to 131301233031 its reverse (130332103131), we get a palindrome (261633336162).
The spelling of 131301233031 in words is "one hundred thirty-one billion, three hundred one million, two hundred thirty-three thousand, thirty-one".
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