Base | Representation |
---|---|
bin | 111101000111001100… |
… | …0000111110100010111 |
3 | 110112202011220021110222 |
4 | 1322032120013310113 |
5 | 4122233323111111 |
6 | 140142331304555 |
7 | 12324123050444 |
oct | 1721630076427 |
9 | 415664807428 |
10 | 131237707031 |
11 | 5072629a802 |
12 | 215272ab15b |
13 | c4b643bc62 |
14 | 64cda129cb |
15 | 363184b7db |
hex | 1e8e607d17 |
131237707031 has 8 divisors (see below), whose sum is σ = 131842376064. Its totient is φ = 130633182720.
The previous prime is 131237707009. The next prime is 131237707037. The reversal of 131237707031 is 130707732131.
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 131237707031 - 210 = 131237706007 is a prime.
It is a super-2 number, since 2×1312377070312 (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 = 131237706982 and 131237707000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131237707037) 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, 2059691 + ... + 2122451.
It is an arithmetic number, because the mean of its divisors is an integer number (16480297008).
Almost surely, 2131237707031 is an apocalyptic number.
131237707031 is a deficient number, since it is larger than the sum of its proper divisors (604669033).
131237707031 is an equidigital number, since it uses as much as digits as its factorization.
131237707031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72361.
The product of its (nonzero) digits is 18522, while the sum is 35.
The spelling of 131237707031 in words is "one hundred thirty-one billion, two hundred thirty-seven million, seven hundred seven thousand, thirty-one".
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