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7045031 = 71006433
BaseRepresentation
bin11010110111111110100111
3111020220222002
4122313332213
53300420111
6410555515
7113611310
oct32677647
914226862
107045031
113a82044
122438b9b
1315c8876
14d15607
1594263b
hex6b7fa7

7045031 has 4 divisors (see below), whose sum is σ = 8051472. Its totient is φ = 6038592.

The previous prime is 7045009. The next prime is 7045033. The reversal of 7045031 is 1305407.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1305407 = 2714817.

It is a de Polignac number, because none of the positive numbers 2k-7045031 is a prime.

It is a super-2 number, since 2×70450312 = 99264923581922, 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 = 7044994 and 7045012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7045033) 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, 503210 + ... + 503223.

It is an arithmetic number, because the mean of its divisors is an integer number (2012868).

Almost surely, 27045031 is an apocalyptic number.

7045031 is a deficient number, since it is larger than the sum of its proper divisors (1006441).

7045031 is a wasteful number, since it uses less digits than its factorization.

7045031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006440.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 7045031 is about 2654.2477276999. The cubic root of 7045031 is about 191.7024380200.

The spelling of 7045031 in words is "seven million, forty-five thousand, thirty-one".

Divisors: 1 7 1006433 7045031