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131059489 = 1111914499
BaseRepresentation
bin1111100111111…
…00111100100001
3100010121111211011
413303330330201
5232022400424
621001020521
73150662431
oct763747441
9303544734
10131059489
1167a85a30
1237a84741
13211c9ac2
14135982c1
15b78c694
hex7cfcf21

131059489 has 4 divisors (see below), whose sum is σ = 142974000. Its totient is φ = 119144980.

The previous prime is 131059483. The next prime is 131059507. The reversal of 131059489 is 984950131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131059489 - 219 = 130535201 is a prime.

It is a super-2 number, since 2×1310594892 = 34353179313882242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131059483) 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 3 ways as a sum of consecutive naturals, for example, 5957239 + ... + 5957260.

It is an arithmetic number, because the mean of its divisors is an integer number (35743500).

Almost surely, 2131059489 is an apocalyptic number.

It is an amenable number.

131059489 is a deficient number, since it is larger than the sum of its proper divisors (11914511).

131059489 is a wasteful number, since it uses less digits than its factorization.

131059489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914510.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 131059489 is about 11448.1216363210. The cubic root of 131059489 is about 507.9521740269.

The spelling of 131059489 in words is "one hundred thirty-one million, fifty-nine thousand, four hundred eighty-nine".

Divisors: 1 11 11914499 131059489