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3031349 = 10212969
BaseRepresentation
bin1011100100000100110101
312201000020012
423210010311
51234000344
6144550005
734523516
oct13440465
95630205
103031349
111790552
121022305
138219c9
1458ca0d
153ed29e
hex2e4135

3031349 has 4 divisors (see below), whose sum is σ = 3035340. Its totient is φ = 3027360.

The previous prime is 3031337. The next prime is 3031351. The reversal of 3031349 is 9431303.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9431303 = 71347329.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 2402500 = 793^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031349 - 24 = 3031333 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031319) 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, 464 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (758835).

Almost surely, 23031349 is an apocalyptic number.

It is an amenable number.

3031349 is a deficient number, since it is larger than the sum of its proper divisors (3991).

3031349 is a wasteful number, since it uses less digits than its factorization.

3031349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 3031349 is about 1741.0769655590. The cubic root of 3031349 is about 144.7255848365.

The spelling of 3031349 in words is "three million, thirty-one thousand, three hundred forty-nine".

Divisors: 1 1021 2969 3031349