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131178030 = 23530714243
BaseRepresentation
bin1111101000110…
…01111000101110
3100010211112102120
413310121320232
5232040144110
621003333410
73151665144
oct764317056
9303745376
10131178030
1168056aa5
1237b21266
132123ba49
14135c9594
15b7b2870
hex7d19e2e

131178030 has 32 divisors (see below), whose sum is σ = 315874944. Its totient is φ = 34864416.

The previous prime is 131178017. The next prime is 131178031. The reversal of 131178030 is 30871131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131178031) 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, 2089 + ... + 16331.

It is an arithmetic number, because the mean of its divisors is an integer number (9871092).

Almost surely, 2131178030 is an apocalyptic number.

131178030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131178030 is an abundant number, since it is smaller than the sum of its proper divisors (184696914).

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

131178030 is a wasteful number, since it uses less digits than its factorization.

131178030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14560.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 131178030 is about 11453.2977783693. The cubic root of 131178030 is about 508.1052724769.

The spelling of 131178030 in words is "one hundred thirty-one million, one hundred seventy-eight thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 307 614 921 1535 1842 3070 4605 9210 14243 28486 42729 71215 85458 142430 213645 427290 4372601 8745202 13117803 21863005 26235606 43726010 65589015 131178030