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131920954 = 2115996407
BaseRepresentation
bin1111101110011…
…11010000111010
3100012020021112021
413313033100322
5232232432304
621031305054
73161211124
oct767172072
9305207467
10131920954
1168514190
123821b18a
132143bc49
1413740214
15b8aca54
hex7dcf43a

131920954 has 8 divisors (see below), whose sum is σ = 215870688. Its totient is φ = 59964060.

The previous prime is 131920907. The next prime is 131920961. The reversal of 131920954 is 459029131.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2998182 + ... + 2998225.

It is an arithmetic number, because the mean of its divisors is an integer number (26983836).

Almost surely, 2131920954 is an apocalyptic number.

131920954 is a deficient number, since it is larger than the sum of its proper divisors (83949734).

131920954 is a wasteful number, since it uses less digits than its factorization.

131920954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996420.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 131920954 is about 11485.6847423216. The cubic root of 131920954 is about 509.0626818127.

The spelling of 131920954 in words is "one hundred thirty-one million, nine hundred twenty thousand, nine hundred fifty-four".

Divisors: 1 2 11 22 5996407 11992814 65960477 131920954