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2971297231 = 72107566717
BaseRepresentation
bin1011000100011010…
…0110010111001111
321200002000112112121
42301012212113033
522041123002411
61210501113411
7133426416100
oct26106462717
97602015477
102971297231
111295246651
126ab0b8867
13384774b56
142028943a7
15125cc4571
hexb11a65cf

2971297231 has 12 divisors (see below), whose sum is σ = 3488716008. Its totient is φ = 2523019632.

The previous prime is 2971297211. The next prime is 2971297261. The reversal of 2971297231 is 1327921792.

It is not a de Polignac number, because 2971297231 - 29 = 2971296719 is a prime.

It is a super-2 number, since 2×29712972312 = 17657214469896534722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971297201) 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 11 ways as a sum of consecutive naturals, for example, 278116 + ... + 288601.

It is an arithmetic number, because the mean of its divisors is an integer number (290726334).

Almost surely, 22971297231 is an apocalyptic number.

2971297231 is a deficient number, since it is larger than the sum of its proper divisors (517418777).

2971297231 is a wasteful number, since it uses less digits than its factorization.

2971297231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566838 (or 566831 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 2971297231 is about 54509.6067771544. The cubic root of 2971297231 is about 1437.6352053899.

The spelling of 2971297231 in words is "two billion, nine hundred seventy-one million, two hundred ninety-seven thousand, two hundred thirty-one".

Divisors: 1 7 49 107 749 5243 566717 3967019 27769133 60638719 424471033 2971297231