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131954829 = 3192314997
BaseRepresentation
bin1111101110101…
…11100010001101
3100012021222222220
413313113202031
5232240023304
621032125553
73161411646
oct767274215
9305258886
10131954829
1168537686
12382368b9
13214514a6
141374c6cd
15b8b7ad9
hex7dd788d

131954829 has 8 divisors (see below), whose sum is σ = 185199840. Its totient is φ = 83339856.

The previous prime is 131954827. The next prime is 131954869. The reversal of 131954829 is 928459131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131954829 - 21 = 131954827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131954821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157442 + ... + 1157555.

It is an arithmetic number, because the mean of its divisors is an integer number (23149980).

Almost surely, 2131954829 is an apocalyptic number.

131954829 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131954829 is a deficient number, since it is larger than the sum of its proper divisors (53245011).

131954829 is a wasteful number, since it uses less digits than its factorization.

131954829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315019.

The product of its digits is 77760, while the sum is 42.

The square root of 131954829 is about 11487.1593094202. The cubic root of 131954829 is about 509.1062508895.

The spelling of 131954829 in words is "one hundred thirty-one million, nine hundred fifty-four thousand, eight hundred twenty-nine".

Divisors: 1 3 19 57 2314997 6944991 43984943 131954829