Base | Representation |
---|---|
bin | 1111100111101… |
… | …00010001100110 |
3 | 100010112201002210 |
4 | 13303310101212 |
5 | 232020231344 |
6 | 21000144250 |
7 | 3150454044 |
oct | 763642146 |
9 | 303481083 |
10 | 131023974 |
11 | 67a61284 |
12 | 37a68086 |
13 | 211b68a3 |
14 | 13589394 |
15 | b781db9 |
hex | 7cf4466 |
131023974 has 16 divisors (see below), whose sum is σ = 266344560. Its totient is φ = 42958560.
The previous prime is 131023969. The next prime is 131023979. The reversal of 131023974 is 479320131.
It is an interprime number because it is at equal distance from previous prime (131023969) and next prime (131023979).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131023979) 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, 178629 + ... + 179360.
It is an arithmetic number, because the mean of its divisors is an integer number (16646535).
Almost surely, 2131023974 is an apocalyptic number.
131023974 is an abundant number, since it is smaller than the sum of its proper divisors (135320586).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131023974 is a wasteful number, since it uses less digits than its factorization.
131023974 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 358055.
The product of its (nonzero) digits is 4536, while the sum is 30.
The square root of 131023974 is about 11446.5704034003. The cubic root of 131023974 is about 507.9062876096.
The spelling of 131023974 in words is "one hundred thirty-one million, twenty-three thousand, nine hundred seventy-four".
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