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131294370 = 23519230341
BaseRepresentation
bin1111101001101…
…10010010100010
3100011001110000110
413310312102202
5232102404440
621010032150
73152661264
oct764662242
9304043013
10131294370
1168126449
1237b78656
132127c99c
1413619b34
15b7d7080
hex7d364a2

131294370 has 32 divisors (see below), whose sum is σ = 331692480. Its totient is φ = 33168960.

The previous prime is 131294353. The next prime is 131294377. The reversal of 131294370 is 73492131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (131294377) 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, 114601 + ... + 115740.

It is an arithmetic number, because the mean of its divisors is an integer number (10365390).

Almost surely, 2131294370 is an apocalyptic number.

131294370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131294370 is an abundant number, since it is smaller than the sum of its proper divisors (200398110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131294370 is a wasteful number, since it uses less digits than its factorization.

131294370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230370.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 131294370 is about 11458.3755393162. The cubic root of 131294370 is about 508.2554386302.

The spelling of 131294370 in words is "one hundred thirty-one million, two hundred ninety-four thousand, three hundred seventy".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 230341 460682 691023 1151705 1382046 2303410 3455115 4376479 6910230 8752958 13129437 21882395 26258874 43764790 65647185 131294370