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131002 = 2173853
BaseRepresentation
bin11111111110111010
320122200221
4133332322
513143002
62450254
71053634
oct377672
9218627
10131002
118a473
126398a
1347821
1435a54
1528c37
hex1ffba

131002 has 8 divisors (see below), whose sum is σ = 208116. Its totient is φ = 61632.

The previous prime is 130987. The next prime is 131009. The reversal of 131002 is 200131.

It can be written as a sum of positive squares in 2 ways, for example, as 101761 + 29241 = 319^2 + 171^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131009) 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, 1893 + ... + 1960.

2131002 is an apocalyptic number.

131002 is a deficient number, since it is larger than the sum of its proper divisors (77114).

131002 is a wasteful number, since it uses less digits than its factorization.

131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 131002 is about 361.9419843014. The cubic root of 131002 is about 50.7877892407.

Adding to 131002 its reverse (200131), we get a palindrome (331133).

The spelling of 131002 in words is "one hundred thirty-one thousand, two".

Divisors: 1 2 17 34 3853 7706 65501 131002