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3097431 = 321971747
BaseRepresentation
bin1011110100001101010111
312211100212200
423310031113
51243104211
6150215543
735220261
oct13641527
95740780
103097431
111826167
1210545b3
13845acc
145a8b31
15412b56
hex2f4357

3097431 has 12 divisors (see below), whose sum is σ = 4499352. Its totient is φ = 2053296.

The previous prime is 3097363. The next prime is 3097439. The reversal of 3097431 is 1347903.

It is not a de Polignac number, because 3097431 - 213 = 3089239 is a prime.

It is a super-2 number, since 2×30974312 = 19188157599522, which contains 22 as substring.

3097431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3097395 and 3097404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3097439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900 + ... + 2646.

It is an arithmetic number, because the mean of its divisors is an integer number (374946).

Almost surely, 23097431 is an apocalyptic number.

3097431 is a deficient number, since it is larger than the sum of its proper divisors (1401921).

3097431 is a wasteful number, since it uses less digits than its factorization.

3097431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 3097431 is about 1759.9519879815. The cubic root of 3097431 is about 145.7696844059.

It can be divided in two parts, 30 and 97431, that added together give a triangular number (97461 = T441).

The spelling of 3097431 in words is "three million, ninety-seven thousand, four hundred thirty-one".

Divisors: 1 3 9 197 591 1747 1773 5241 15723 344159 1032477 3097431