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300131997 = 311591391109
BaseRepresentation
bin10001111000111…
…010011010011101
3202220202021200220
4101320322122131
51103313210442
645440511553
710303036254
oct2170723235
9686667626
10300131997
11144464680
128461b5b9
134a245bc9
142bc0979b
151b537eec
hex11e3a69d

300131997 has 32 divisors (see below), whose sum is σ = 447552000. Its totient is φ = 177368640.

The previous prime is 300131983. The next prime is 300132029. The reversal of 300131997 is 799131003.

It is not a de Polignac number, because 300131997 - 216 = 300066461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300131977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270079 + ... + 271187.

It is an arithmetic number, because the mean of its divisors is an integer number (13986000).

Almost surely, 2300131997 is an apocalyptic number.

It is an amenable number.

300131997 is a deficient number, since it is larger than the sum of its proper divisors (147420003).

300131997 is a wasteful number, since it uses less digits than its factorization.

300131997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 300131997 is about 17324.3180818178. The cubic root of 300131997 is about 669.5311169540.

300131997 divided by its sum of digits (33) gives a palindrome (9094909).

The spelling of 300131997 in words is "three hundred million, one hundred thirty-one thousand, nine hundred ninety-seven".

Divisors: 1 3 11 33 59 139 177 417 649 1109 1529 1947 3327 4587 8201 12199 24603 36597 65431 90211 154151 196293 270633 462453 719741 1695661 2159223 5086983 9094909 27284727 100043999 300131997