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613031 = 2921139
BaseRepresentation
bin10010101101010100111
31011010220212
42111222213
5124104111
621050035
75132156
oct2255247
91133825
10613031
11389641
1225691b
13186053
1411d59d
15c198b
hex95aa7

613031 has 4 divisors (see below), whose sum is σ = 634200. Its totient is φ = 591864.

The previous prime is 613013. The next prime is 613049. The reversal of 613031 is 130316.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (613013) and next prime (613049).

It is a cyclic number.

It is not a de Polignac number, because 613031 - 26 = 612967 is a prime.

It is a super-2 number, since 2×6130312 = 751614013922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612997 and 613015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10541 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (158550).

2613031 is an apocalyptic number.

613031 is a deficient number, since it is larger than the sum of its proper divisors (21169).

613031 is a wasteful number, since it uses less digits than its factorization.

613031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21168.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 613031 is about 782.9629620870. The cubic root of 613031 is about 84.9494971045.

Adding to 613031 its reverse (130316), we get a palindrome (743347).

The spelling of 613031 in words is "six hundred thirteen thousand, thirty-one".

Divisors: 1 29 21139 613031