Search a number
-
+
131076217 = 760717231
BaseRepresentation
bin1111101000000…
…01000001111001
3100010122100202201
413310001001321
5232023414332
621001230201
73151062256
oct764010171
9303570681
10131076217
1167a97558
1237a92361
13212045bc
14135a042d
15b7925e7
hex7d01079

131076217 has 4 divisors (see below), whose sum is σ = 131101056. Its totient is φ = 131051380.

The previous prime is 131076203. The next prime is 131076289. The reversal of 131076217 is 712670131.

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 a de Polignac number, because none of the positive numbers 2k-131076217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131076917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009 + ... + 16222.

It is an arithmetic number, because the mean of its divisors is an integer number (32775264).

Almost surely, 2131076217 is an apocalyptic number.

It is an amenable number.

131076217 is a deficient number, since it is larger than the sum of its proper divisors (24839).

131076217 is an equidigital number, since it uses as much as digits as its factorization.

131076217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24838.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 131076217 is about 11448.8522132133. The cubic root of 131076217 is about 507.9737842197.

The spelling of 131076217 in words is "one hundred thirty-one million, seventy-six thousand, two hundred seventeen".

Divisors: 1 7607 17231 131076217